What is the Sum of Factors of 1980?

The Sum of Factors of 1980 means that you add up all the factors of 1980. You may be looking for the Sum of Factors of 1980 including or excluding 1980 itself.

Here is the calculation and answer to the Sum of all Factors of 1980 including 1980:

1 + 2 + 3 + 4 + 5 + 6 + 9 + 10 + 11 + 12 + 15 + 18 + 20 + 22 + 30 + 33 + 36 + 44 + 45 + 55 + 60 + 66 + 90 + 99 + 110 + 132 + 165 + 180 + 198 + 220 + 330 + 396 + 495 + 660 + 990 + 1980 = 6552

Here is the calculation and answer to the Sum of Factors of 1980 if you exclude 1980 itself:

1 + 2 + 3 + 4 + 5 + 6 + 9 + 10 + 11 + 12 + 15 + 18 + 20 + 22 + 30 + 33 + 36 + 44 + 45 + 55 + 60 + 66 + 90 + 99 + 110 + 132 + 165 + 180 + 198 + 220 + 330 + 396 + 495 + 660 + 990 = 4572

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What is the Sum of Factors of 1981?
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