Q: What is the sum of all factors of the number 20,808 excluding 20,808?

 A: 39,057

Why is 39,057 the sum of all factors of 20,808, excluding 20,808?

The factors of the number 20,808 are: 1, 2, 3, 4, 6, 8, 9, 12, 17, 18, 24, 34, 36, 51, 68, 72, 102, 136, 153, 204, 289, 306, 408, 578, 612, 867, 1156, 1224, 1734, 2312, 2601, 3468, 5202, 6936, 10404, 20808.

If you add them up, you will get the total of 20,847. Now subtract 20,808 to get 39,057


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