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Question 269933: What is the smallest perfect number?
Found 4 solutions by ankor@dixie-net.com, Tobiasz, Alan3354, richwmiller:
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! What is the smallest perfect number?
Defined as,"A number the sum of whose distinct integral divisors, including 1 but excluding itself, is that number itself"
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6: 2,3,1
Answer by Tobiasz(54)  (Show Source):
Answer by Alan3354(69443)  (Show Source):
Answer by richwmiller(17219)  (Show Source):
You can put this solution on YOUR website! http://en.wikipedia.org/wiki/Perfect_number
In mathematics, a perfect number is a positive integer that 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), or σ(n) = 2n.
The first perfect number is 6, because 1, 2, and 3 are its proper positive divisors, and 1 + 2 + 3 = 6. Equivalently, the number 6 is equal to half the sum of all its positive divisors: ( 1 + 2 + 3 + 6 ) / 2 = 6.
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