Q: What is the sum of all factors of the number 15,555,920 excluding 15,555,920?

A: 20,781,784

Why is 20,781,784 the sum of all factors of 15,555,920, excluding 15,555,920?

The factors of the number 15,555,920 are: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 337, 577, 674, 1154, 1348, 1685, 2308, 2696, 2885, 3370, 4616, 5392, 5770, 6740, 9232, 11540, 13480, 23080, 26960, 46160, 194449, 388898, 777796, 972245, 1555592, 1944490, 3111184, 3888980, 7777960, 15555920.

If you add them up, you will get the total of 15,555,940. Now subtract 15,555,920 to get 20,781,784