Q: What is the sum of all factors of the number 21,157,172 excluding 21,157,172?

 A: 15,922,444

Why is 15,922,444 the sum of all factors of 21,157,172, excluding 21,157,172?

The factors of the number 21,157,172 are: 1, 2, 4, 751, 1502, 3004, 7043, 14086, 28172, 5289293, 10578586, 21157172.

If you add them up, you will get the total of 21,157,187. Now subtract 21,157,172 to get 15,922,444


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