Q: What is the sum of all factors of the number 396,760 excluding 396,760?

A: 712,040

Why is 712,040 the sum of all factors of 396,760, excluding 396,760?

The factors of the number 396,760 are: 1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 109, 130, 140, 182, 218, 260, 280, 364, 436, 455, 520, 545, 728, 763, 872, 910, 1090, 1417, 1526, 1820, 2180, 2834, 3052, 3640, 3815, 4360, 5668, 6104, 7085, 7630, 9919, 11336, 14170, 15260, 19838, 28340, 30520, 39676, 49595, 56680, 79352, 99190, 198380, 396760.

If you add them up, you will get the total of 397,472. Now subtract 396,760 to get 712,040