Q: What is the sum of all factors of the number 87,989 excluding 87,989?

A: 13,291

Why is 13,291 the sum of all factors of 87,989, excluding 87,989?

The factors of the number 87,989 are: 1, 11, 19, 209, 421, 4631, 7999, 87989.

If you add them up, you will get the total of 88,002. Now subtract 87,989 to get 13,291

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