Q: What is the sum of all factors of the number 163,989 excluding 163,989?

 A: 123,051

Why is 123,051 the sum of all factors of 163,989, excluding 163,989?

The factors of the number 163,989 are: 1, 3, 7, 9, 19, 21, 57, 63, 133, 137, 171, 399, 411, 959, 1197, 1233, 2603, 2877, 7809, 8631, 18221, 23427, 54663, 163989.

If you add them up, you will get the total of 164,112. Now subtract 163,989 to get 123,051


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