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perfect number (Question)

raghu1 said – Wed, 02 Sep 2009 16:01:41 -0000 ( Link )

Can anyone explain me what are perfect numbers?

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  1. wmoxam said – Thu, 03 Sep 2009 20:57:46 -0000 ( Link )

    A perfect number is a positive integer which is the sum of its proper positive divisors, that is, the sum of the positive divisors excluding the number itself. Equivalently, a perfect number is a number that is half the sum of all of its positive divisors (including itself).

    For example, 6 is a perfect number:

    
6 can be divided by 1,2,3,6
1 + 2 + 3 = 6
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