Q: What is the sum of all factors of the number 643,521,712 excluding 643,521,712?

 A: 603,301,636

Why is 603,301,636 the sum of all factors of 643,521,712, excluding 643,521,712?

The factors of the number 643,521,712 are: 1, 2, 4, 8, 16, 40220107, 80440214, 160880428, 321760856, 643521712.

If you add them up, you will get the total of 643,522,315. Now subtract 643,521,712 to get 603,301,636


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