Q: What is the sum of all factors of the number 311,021,240 excluding 311,021,240?

A: 390,790,840

Why is 390,790,840 the sum of all factors of 311,021,240, excluding 311,021,240?

The factors of the number 311,021,240 are: 1, 2, 4, 5, 8, 10, 20, 40, 353, 706, 1412, 1765, 2824, 3530, 7060, 14120, 22027, 44054, 88108, 110135, 176216, 220270, 440540, 881080, 7775531, 15551062, 31102124, 38877655, 62204248, 77755310, 155510620, 311021240.

If you add them up, you will get the total of 311,021,630. Now subtract 311,021,240 to get 390,790,840