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28 is a perfect number. Add the factors of the number, excluding the number itself. 28: 1 +2 +4 + 7 + 14 = 28. The sum of its factors is the same as the number! The next perfect numbers are 496, 8128, 33550336, 8589869056, 137438691328, 2305843008139952128, 2658455991569831744654692615953842176, and 191561942608236107294793378084303638130997321548169216. Chances are that you won't be using that!
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Find perfect number less than forty?
6 and 28
Is 28 a perfect number?
Yes it is. 6 is the first perfect number, 28 is the second perfect number.
What are perfact numbers?
If the sum of all a number's factors (factors that are smaller than the number itself) is equal to the number itself, the number is said to be "perfect". For example, the factors of 6 (excluding 6 itself) are 1, 2, and 3; and the sum of these numbers is exactly 6. The smallest perfect numbers are 6, 28, 496, 8128. It isn't known whether the set of perfect numbers is finite or infinite. Also, it isn't known whether there are any odd perfect number; all known perfect numbers are even.
How many integers less than 100 have an odd number of factors?
There are 9 integers less than 100 that have an odd number of factors.Every factor of a number has a pair, eg 2 & 3 are a factor pair of 6; and so it would be expected that every number has an even number of factors.However, if the factor pair of a number are the same number (eg 6 & 6 are a factor pair of 36), then there will be an odd number of factors.When there is a repeated factor like this, the number is a perfect square.Thus only perfect squares have an odd number of factors.Less than 100 there are 9 perfect squares (1, 4, 9, 16, 25, 36, 49, 64 & 81) which have an odd number of factors.100 itself is a perfect square and also has an odd number of factors, but the question asked for those numbers less than 100 with an odd number of factors.
Is 50 near a perfect number?
No, it is not near a perfect number. The first four known perfect numbers are 6, 28, 496 and 8,128.
What is a perfect number?
A perfect number is one whose positive integer factors, other than itself, add up to the number itself. For example, the factors of 6, other than itself, are 1, 2, 3, and 1 + 2 + 3 = 6. Therefore, 6 is a perfect number.The first eight perfect numbers are:62849681283355033685898690561374386913282305843008139952128
Why is six a perfect number?
A perfect number is a number whose positive integer factors, other than itself, when added together, total the number itself. Therefore, the factors of 6 are 1, 2, and 3. Since 1 + 2 + 3 = 6, 6 is a perfect number. The next four perfect numbers, after 6, are: 28, 496, 8128, 33550336
What is a perfect number less than 50?
6 and 28 are perfect numbers less than 50.
What are some other perfect numbers?
Other than what? The first perfect numbers are 6 and 28.
What is perfect number in C language?
Perfect numbers have nothing to do with programming languages. Some of them are: 6, 28, 496, 8128, 33550336.
Why is 16 a near perfect number?
A near-perfect number is one that is close to being a perfect one (obvi). So to find out if it's perfect or not (there are other terms, but that doesn't really matter right now), you add up it's divisors other than itself. So for example: 6 is a perfect number because 1+2+3+6. 16 1+2+4+8=15, so thus it is near-perfect. The four perfect numbers are 6, 28, 496, 8128
Is 42 a perfect number?
Use the definition of a perfect number! Add the factors; if the sum of all the factors (excluding the number itself) is equal to the number, it is a perfect number, otherwise it isn't. (Actually, the only perfect numbers less than 100 are 6, and 28.)Use the definition of a perfect number! Add the factors; if the sum of all the factors (excluding the number itself) is equal to the number, it is a perfect number, otherwise it isn't. (Actually, the only perfect numbers less than 100 are 6, and 28.)Use the definition of a perfect number! Add the factors; if the sum of all the factors (excluding the number itself) is equal to the number, it is a perfect number, otherwise it isn't. (Actually, the only perfect numbers less than 100 are 6, and 28.)Use the definition of a perfect number! Add the factors; if the sum of all the factors (excluding the number itself) is equal to the number, it is a perfect number, otherwise it isn't. (Actually, the only perfect numbers less than 100 are 6, and 28.)
Find perfect number less than forty?
6 and 28
Is 3 decimal 6 a perfect square?
No, 3.6 is not a perfect square. A perfect square is defined as a number that has a whole number for a square root. In other words, there's no whole number that, when multiplied by itself, equals 3.6.
What is the perfect number of 6?
6 is a perfect number. All of its factors (1,2,3) multiply to get 6.
Is 7 a perfect number?
No. 6 is a perfect number, but not 7.
Is 28 a perfect number?
Yes it is. 6 is the first perfect number, 28 is the second perfect number.
