Q: What is the sum of all factors of the number 8,641,820 excluding 8,641,820?

A: 11,311,372

Why is 11,311,372 the sum of all factors of 8,641,820, excluding 8,641,820?

The factors of the number 8,641,820 are: 1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 3571, 7142, 14284, 17855, 35710, 39281, 71420, 78562, 157124, 196405, 392810, 432091, 785620, 864182, 1728364, 2160455, 4320910, 8641820.

If you add them up, you will get the total of 8,641,831. Now subtract 8,641,820 to get 11,311,372