Question

what is a perfect number?

Answer 1

A perfect number is a number whose  sum of factors (excluding the number)of the number is equal to the number.

For example:

6 = 1*2*3

==> 6 = 1+2+3

==> 6=6

6 is a perfect number

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Answer 2

Answer:

$Perfect Number:$

A positive integer that is equal to the sum of its proper divisors.

$Example:$

The smallest perfect number is 6, which is the sum of 1, 2, and 3.

Other perfect numbers are 28, 496, and 8,128.