SOLUTION: Find the sum of all the common factors of 32 and 64. A. 63 B. 62 C. 31 D. 30 E. 38

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Question 252172: Find the sum of all the common factors of 32 and 64.
A. 63 B. 62 C. 31 D. 30 E. 38
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
The factors of 32 are: 1, 2, 4, 8, 16, and 32.
The factors of 64 are: 1, 2, 4, 8, 16, 32, and 64.
So, we see that all factors of 32 are also the factors of 64, which means they are common.
Now, we add: 1+2+4+8+16+32 = 63.
The answer is (A) 63.