What is the Sum of Factors of 1989?

The Sum of Factors of 1989 means that you add up all the factors of 1989. You may be looking for the Sum of Factors of 1989 including or excluding 1989 itself.

Here is the calculation and answer to the Sum of all Factors of 1989 including 1989:

1 + 3 + 9 + 13 + 17 + 39 + 51 + 117 + 153 + 221 + 663 + 1989 = 3276

Here is the calculation and answer to the Sum of Factors of 1989 if you exclude 1989 itself:

1 + 3 + 9 + 13 + 17 + 39 + 51 + 117 + 153 + 221 + 663 = 1287

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