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!
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.
The next one is 28.
There is not a number that is a perfect square and perfect cube between 1 and 25.There is not a number that is a perfect square and perfect cube between 1 and 25.There is not a number that is a perfect square and perfect cube between 1 and 25.There is not a number that is a perfect square and perfect cube between 1 and 25.
Yes it is. 6 is the first perfect number, 28 is the second perfect number.
abundant since sum of divisors is 16256
The fourth perfect number is 8128.
496 is the third perfect number and 8128 is the fourth perfect number.
8128 4064,2 2032,2,2 1016,2,2,2 508,2,2,2,2 254,2,2,2,2,2 127,2,2,2,2,2,2
22 is not a perfect number but 6, 28, 496 and 8128 are perfect numbers.
2002 is not a perfect number. The first four perfect numbers are 6, 28, 496, and 8128.
There is a formula to calculate even perfect numbers, 2p-1(2p - 1) where p is a prime number. When p = 7 then 26(27 - 1) = 64 x 127 = 8128 So 8128 is the 4th perfect number. (The other three occur when p = 2, 3 and 5)
Yes. The next perfect numbers are 496 and 8128.
No. The first four perfect numbers are 6, 28, 496, 8128.
You get 8128!!! It is PERFECT!!
6, 28, 496, 8128, 33550336
I have this question in algebra 2 and the book said 496, 8128