Q: What is the sum of all factors of the number 20,625 excluding 20,625?

A: 16,863

Why is 16,863 the sum of all factors of 20,625, excluding 20,625?

The factors of the number 20,625 are: 1, 3, 5, 11, 15, 25, 33, 55, 75, 125, 165, 275, 375, 625, 825, 1375, 1875, 4125, 6875, 20625.

If you add them up, you will get the total of 20,641. Now subtract 20,625 to get 16,863

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