Question

A number of which sum of all it's factor is equal to twice number is called

Answer 1

Answer:

Step-by-step explanation:

A number for which sum of all its factors is equal to twice the is called a perfect no ... For example, the divisors of 28 are 1, 2, 4, 7, 14, and 28, so the sum of proper divisors is 1 + 2 + 4 + 7 + 14 = 28.

Answer 2

Step-by-step explanation:

a number of which sum of all it's factor is equal to twice number is called prefect number..............