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The only odd number that has exactly 3 factors is a square number of a Prime number. This is because the only factors of a prime number are 1 and itself. So, if you square a prime number, you get an odd number with 3 factors (1, the prime number, and the square of the prime number). An example of such a number is 9, which is the square of the prime number 3 and has factors 1, 3, and 9.
9, 25, 49 and so on. Prime squares have three factors and other than 4, they are all odd numbers.
9 25 49
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Are the factors of an odd number always odd?
Yes. An even number is defined as being evenly divisible by 2 (no fractional answers, only integers). If an odd number has an even factor, then because of the above definition, this odd number must have a factor of 2. But you will be hard pressed to find an odd number that is a multiple of 2, because that is already the definition of an even number. So, odd numbers cannot have even factors and thus odd numbers always have odd factors.
Which number from ten to twenty has an odd number of factors?
Only perfect squares can have an odd number of factors. The answer is 16. It has five factors: 1,2,4,8,16.
Which numbers between 50 and 60 have an odd number of factors?
No numbers in that range have an odd number of factors.
Is the product of an odd number of factors always a negative number?
Only if an odd number of the factors are negative numbers.
What type of number has odd numbers as factors?
Both odd and even numbers may have odd numbers as factors.
Do odd numbers have a odd or even number of factors?
The number of factors can be either even or odd.
Why do the following numbers have an odd number of factors 1610025?
1610025 = 3*5*5*21467 has 12 factors and 12 is NOT an odd number.
How do you find an odd factor of a number?
All nonzero numbers have factors. Some factors are odd numbers. 3 is an odd factor of 12.
What odd number has the most factors?
That's just as meaningless a question as asking "what is the biggest number?" Just as there is no biggest number (you can always get bigger numbers by adding 1), there is no odd number with the most factors. You could multiply any odd number by 3, and get an odd number with another factor of 3.
What number has 6 factors all of which are odd?
45
What are the odd factors of 12?
The factors of 12 are 1, 2, 3, 4, 6, and 12. The odd factors of 12 are the factors that are not divisible by 2, which are 1, 3, and 12. These odd factors are numbers that can be multiplied together to give the number 12 without involving the number 2.
Does 57 have a odd number of factors?
No. The number 57 has an even number of factors. They are: 1, 3, 19, 57.
Odd number of factors?
Square numbers have an odd number of factors.
What kind of factors have an odd number of factors?
Square numbers have an odd number of factors.
Are the factors of an odd number always odd?
Yes. An even number is defined as being evenly divisible by 2 (no fractional answers, only integers). If an odd number has an even factor, then because of the above definition, this odd number must have a factor of 2. But you will be hard pressed to find an odd number that is a multiple of 2, because that is already the definition of an even number. So, odd numbers cannot have even factors and thus odd numbers always have odd factors.
Can an odd number have odd numbers of factors?
Yes. Square numbers have an odd number of factors. 49 has three factors.
Can a number have an odd number of factors?
Yes, quare numbers have an odd number of factors.
