Q: What is the sum of all factors of the number 521,840 excluding 521,840?

A: 803,968

Why is 803,968 the sum of all factors of 521,840, excluding 521,840?

The factors of the number 521,840 are: 1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 593, 880, 1186, 2372, 2965, 4744, 5930, 6523, 9488, 11860, 13046, 23720, 26092, 32615, 47440, 52184, 65230, 104368, 130460, 260920, 521840.

If you add them up, you will get the total of 522,643. Now subtract 521,840 to get 803,968