Q: What is the sum of all factors of the number 25,720 excluding 25,720?

 A: 32,240

Why is 32,240 the sum of all factors of 25,720, excluding 25,720?

The factors of the number 25,720 are: 1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2572, 3215, 5144, 6430, 12860, 25720.

If you add them up, you will get the total of 25,752. Now subtract 25,720 to get 32,240


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