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Answer:

In number theory, a perfect number is a positive integer that is equal to the sum of its positive divisors, excluding the number itself.

Step-by-step explanation:

The smallest perfect number is 6, which is the sum of 1, 2, and 3. Other perfect numbers are 28, 496, and 8,128.

maheshsinghmeenu

Step-by-step explanation:

You Actually mean perfect square numbers,*

These are the numbers that are square of numbers perfectly...

for example..

2²= 4

3³ = 9

So, 4,9 are perfect square of a number