Q: What is the sum of all factors of the number 78,840 excluding 78,840?

A: 187,560

Why is 187,560 the sum of all factors of 78,840, excluding 78,840?

The factors of the number 78,840 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 73, 90, 108, 120, 135, 146, 180, 216, 219, 270, 292, 360, 365, 438, 540, 584, 657, 730, 876, 1080, 1095, 1314, 1460, 1752, 1971, 2190, 2628, 2920, 3285, 3942, 4380, 5256, 6570, 7884, 8760, 9855, 13140, 15768, 19710, 26280, 39420, 78840.

If you add them up, you will get the total of 79,027. Now subtract 78,840 to get 187,560