Question

Give examples of perfect number

Answer 1

Perfect numbers are those integers(postive) that is equal to sum of its proper divisor.

Proper divisor means the divisor which can completely divide a number leaving a remainder zero.

Now., The smallest proper number is 6 as its proper divisors - 1..2..3 will sum up to 6

Similarly 28= 1+2+4+7+14

{1, 2, 4, 7, 14 are divisor of 28}

The list goes like

6, 28, 496, 8128, etc.,