Q: What is the sum of all factors of the number 402,210 excluding 402,210?

A: 678,870

Why is 678,870 the sum of all factors of 402,210, excluding 402,210?

The factors of the number 402,210 are: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 41, 45, 82, 90, 109, 123, 205, 218, 246, 327, 369, 410, 545, 615, 654, 738, 981, 1090, 1230, 1635, 1845, 1962, 3270, 3690, 4469, 4905, 8938, 9810, 13407, 22345, 26814, 40221, 44690, 67035, 80442, 134070, 201105, 402210.

If you add them up, you will get the total of 402,888. Now subtract 402,210 to get 678,870