What is the sum of the prime factor of 102

The sum is 22

Step-by-step explanation:

102 = 51*2

      = 3*17*2

3 and 2 and 17 are all prime

The sum of the prime factors is

3+17+2 = 22

John is thinking of the number 20

please rate my answer

  532

Step-by-step explanation:

  532 = 2·2·7·19

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There are 24 possible 3-digit numbers from the set {2, 3, 5, 7}. Of those, 6 have four factors: 372, 375, 532, 572, 732, 735.

The sums of factors of these numbers are ...

  38, 18, 30, 28, 68, 22

The number of interest is 532.

128 from the round b4 it should add

26

Step-by-step explanation:

The prime factors of 25 are 5*5.  Their sum is 5+5 = 10.

The prime factors of 26 are 2*13.  Their sum is 2+13 = 15.

The prime factors of 27 are 3*3*3.  Their sum is 3+3+3 = 9.

The greatest of these sums is 15; this means 26 is the best choice.