Question

a no. for which sum of all its factors is equal to twice the no. is called

Answer 1

A number for which sum of all its factors excluding itself (also known as aliquot sum) is equal to twice the number is called perfect number.

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Answer 2

Hey there !
Looks like i can help you .

The answer is Perfect Number

»A Number for which sum of all its factors is equal to twice the number is called Perfect Number

»Example :- 28

/ Factors / :- 1,2,4,7,14,28

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

56=56

Hence 28 is a Perfect Number

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