Q: What is the sum of all factors of the number 638,480 excluding 638,480?

A: 914,992

Why is 914,992 the sum of all factors of 638,480, excluding 638,480?

The factors of the number 638,480 are: 1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 347, 368, 460, 694, 920, 1388, 1735, 1840, 2776, 3470, 5552, 6940, 7981, 13880, 15962, 27760, 31924, 39905, 63848, 79810, 127696, 159620, 319240, 638480.

If you add them up, you will get the total of 639,394. Now subtract 638,480 to get 914,992