Q: What is the sum of all factors of the number 268,640 excluding 268,640?

A: 402,688

Why is 402,688 the sum of all factors of 268,640, excluding 268,640?

The factors of the number 268,640 are: 1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 73, 80, 92, 115, 146, 160, 184, 230, 292, 365, 368, 460, 584, 730, 736, 920, 1168, 1460, 1679, 1840, 2336, 2920, 3358, 3680, 5840, 6716, 8395, 11680, 13432, 16790, 26864, 33580, 53728, 67160, 134320, 268640.

If you add them up, you will get the total of 269,042. Now subtract 268,640 to get 402,688