Q: What is the sum of all factors of the number 81,315 excluding 81,315?

 A: 71,565

Why is 71,565 the sum of all factors of 81,315, excluding 81,315?

The factors of the number 81,315 are: 1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 139, 195, 417, 585, 695, 1251, 1807, 2085, 5421, 6255, 9035, 16263, 27105, 81315.

If you add them up, you will get the total of 81,386. Now subtract 81,315 to get 71,565


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