Q: What is the sum of all factors of the number 642,555 excluding 642,555?
A: 490,005
The factors of the number 642,555 are: 1, 3, 5, 9, 15, 45, 109, 131, 327, 393, 545, 655, 981, 1179, 1635, 1965, 4905, 5895, 14279, 42837, 71395, 128511, 214185, 642555.
If you add them up, you will get the total of 643,045. Now subtract 642,555 to get 490,005