Q: What is the sum of all factors of the number 86,991 excluding 86,991?

 A: 30,513

Why is 30,513 the sum of all factors of 86,991, excluding 86,991?

The factors of the number 86,991 are: 1, 3, 107, 271, 321, 813, 28997, 86991.

If you add them up, you will get the total of 87,021. Now subtract 86,991 to get 30,513


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