Q: What is the sum of all factors of the number 121,203,210 excluding 121,203,210?

A: 170,097,270

Why is 170,097,270 the sum of all factors of 121,203,210, excluding 121,203,210?

The factors of the number 121,203,210 are: 1, 2, 3, 5, 6, 10, 15, 30, 823, 1646, 2469, 4115, 4909, 4938, 8230, 9818, 12345, 14727, 24545, 24690, 29454, 49090, 73635, 147270, 4040107, 8080214, 12120321, 20200535, 24240642, 40401070, 60601605, 121203210.

If you add them up, you will get the total of 121,203,380. Now subtract 121,203,210 to get 170,097,270