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a perfect number is a number whose sum of the factors (excluding the number ) is equal to the number itself.
1 + 2 +3 = 6
so six is the perfect number.
3 5 3
28 is second perfect no..

see how??

28 = 1+2+4+7+14
1 5 1
really understood or
i just thought abt prime factorisation....but simple factorisation was the method
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