Q: What is the sum of all factors of the number 128,729 excluding 128,729?

 A: 1,291

Why is 1,291 the sum of all factors of 128,729, excluding 128,729?

The factors of the number 128,729 are: 1, 109, 1181, 128729.

If you add them up, you will get the total of 128,730. Now subtract 128,729 to get 1,291


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