Q: What is the sum of all factors of the number 413,840 excluding 413,840?

A: 687,280

Why is 687,280 the sum of all factors of 413,840, excluding 413,840?

The factors of the number 413,840 are: 1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 739, 1478, 2956, 3695, 5173, 5912, 7390, 10346, 11824, 14780, 20692, 25865, 29560, 41384, 51730, 59120, 82768, 103460, 206920, 413840.

If you add them up, you will get the total of 414,527. Now subtract 413,840 to get 687,280