What is the Sum of Factors of 15?

The Sum of Factors of 15 means that you add up all the factors of 15. You may be looking for the Sum of Factors of 15 including or excluding 15 itself.

Here is the calculation and answer to the Sum of all Factors of 15 including 15:

1 + 3 + 5 + 15 = 24

Here is the calculation and answer to the Sum of Factors of 15 if you exclude 15 itself:

1 + 3 + 5 = 9

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