Q: What is the sum of all factors of the number 11,940 excluding 11,940?

 A: 21,660

Why is 21,660 the sum of all factors of 11,940, excluding 11,940?

The factors of the number 11,940 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 199, 398, 597, 796, 995, 1194, 1990, 2388, 2985, 3980, 5970, 11940.

If you add them up, you will get the total of 11,961. Now subtract 11,940 to get 21,660


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