Q: What is the sum of all factors of the number 30,987 excluding 30,987?

 A: 17,997

Why is 17,997 the sum of all factors of 30,987, excluding 30,987?

The factors of the number 30,987 are: 1, 3, 9, 11, 33, 99, 313, 939, 2817, 3443, 10329, 30987.

If you add them up, you will get the total of 31,004. Now subtract 30,987 to get 17,997


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