Q: What is the sum of all factors of the number 400,426,125 excluding 400,426,125?

A: 326,463,987

Why is 326,463,987 the sum of all factors of 400,426,125, excluding 400,426,125?

The factors of the number 400,426,125 are: 1, 3, 5, 11, 15, 25, 33, 55, 75, 125, 165, 275, 375, 825, 1375, 4125, 97073, 291219, 485365, 1067803, 1456095, 2426825, 3203409, 5339015, 7280475, 12134125, 16017045, 26695075, 36402375, 80085225, 133475375, 400426125.

If you add them up, you will get the total of 400,426,451. Now subtract 400,426,125 to get 326,463,987