In number theory, a perfect number is a positive integer that is equal to the sum of its positive proper divisors, that is, divisors excluding the number itself. For instance, 6 has proper divisors 1, 2 and 3, and 1 + 2 + 3 = 6, so 6 is a perfect number. The next perfect number is 28, since 1 + 2 + 4 + 7 + 14 = 28.

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Aug 28, 2024 · Perfect number, a positive integer that is equal to the sum of its proper divisors. The smallest perfect number is 6, which is the sum of 1, ...

### What are Perfect Numbers? Definition, Examples, and Facts

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A perfect number is a positive integer that is equal to the sum of its positive factors, excluding the number itself.

A perfect number is defined as a positive integer that can be expressed as the sum of its proper factors (factors except for the number itself).

A perfect number is defined as a positive integer which is equal to the sum of its positive divisors, excluding the number itself.

Perfect numbers are positive integers n such that n=s(n), (1) where s(n) is the restricted divisor function (i.e., the sum of proper divisors of n), ...

A perfect number is defined to be one which is equal to the sum of its aliquot parts. The four perfect numbers 6, 28, 496 and 8128 seem to have been known from ...

Aug 5, 2024 · A perfect number is a positive integer equal to the total of its positive divisors, except the number itself in number theory.

Aug 10, 2018 · I'm familiar with how a “perfect number” is defined (basically the sum total of any integer divisors) but I was wondering if there is anything ...