Q: What is the sum of all factors of the number 120,989 excluding 120,989?

 A: 18,979

Why is 18,979 the sum of all factors of 120,989, excluding 120,989?

The factors of the number 120,989 are: 1, 11, 17, 187, 647, 7117, 10999, 120989.

If you add them up, you will get the total of 121,007. Now subtract 120,989 to get 18,979


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