Q: What is the sum of all factors of the number 86,989 excluding 86,989?

 A: 21,075

Why is 21,075 the sum of all factors of 86,989, excluding 86,989?

The factors of the number 86,989 are: 1, 7, 17, 43, 119, 289, 301, 731, 2023, 5117, 12427, 86989.

If you add them up, you will get the total of 87,010. Now subtract 86,989 to get 21,075


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