Q: What is the sum of all factors of the number 637,520 excluding 637,520?

A: 961,336

Why is 961,336 the sum of all factors of 637,520, excluding 637,520?

The factors of the number 637,520 are: 1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 613, 1040, 1226, 2452, 3065, 4904, 6130, 7969, 9808, 12260, 15938, 24520, 31876, 39845, 49040, 63752, 79690, 127504, 159380, 318760, 637520.

If you add them up, you will get the total of 638,481. Now subtract 637,520 to get 961,336