Q: What is the sum of all factors of the number 12,210,100 excluding 12,210,100?

A: 18,072,684

Why is 18,072,684 the sum of all factors of 12,210,100, excluding 12,210,100?

The factors of the number 12,210,100 are: 1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 350, 700, 17443, 34886, 69772, 87215, 122101, 174430, 244202, 348860, 436075, 488404, 610505, 872150, 1221010, 1744300, 2442020, 3052525, 6105050, 12210100.

If you add them up, you will get the total of 12,210,118. Now subtract 12,210,100 to get 18,072,684