Q: What is the sum of all factors of the number 213,121,405 excluding 213,121,405?
A: 81,128,195
The factors of the number 213,121,405 are: 1, 5, 7, 35, 149, 745, 1043, 5215, 40867, 204335, 286069, 1430345, 6089183, 30445915, 42624281, 213121405.
If you add them up, you will get the total of 213,121,486. Now subtract 213,121,405 to get 81,128,195