# math

a number is called a perfect number if it equals the sum of all its factors except itself. for instance , 6 is a perfect number because its factors are 1,2,3 and 6 and 1 + 2 + 3 = 6 .What is the next greater perfect number >

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1. 10
Equivalently, the number 6 is equal to half the sum of all its positive divisors: ( 1 + 2 + 3 + 6 ) / 2 = 6. The next perfect number is 10 = 1 + 2 + 3 + 4. This is followed by the perfect numbers
(1+2+3+4+10)/2
20 / 2 = 10

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posted by Rekha
2. my son is having trouble with a question i'v never heard of heres the question: A perfect number is a number
that equals the sum of its factors, not including
itself. For example, the factors of 28 are 1, 2, 4, 7, 14, and 28.
Because 1 + 2 + 4 + 7 + 14 = 28, 28 is a perfect number.
What are the perfect numbers between 1 and 28?

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