Question

Is 28 a perfect number?
[Hint : Write its factors and check]​

Answer 1

Step-by-step explanation:

perfect number is a number that is half the sum of all of its positive divisors including itself; in symbols

28 has factors=1,2,4,7,14

1+2+4+7+14 =28

Answer 2

Answer:

We know that the factors of 28 are 1, 2, 4, 7, 14, and 28. The sum of all the factors is 56 that is 2 times of 28. Hence, 28 is a perfect number.