Q: What is the sum of all factors of the number 51,440 excluding 51,440?

 A: 68,344

Why is 68,344 the sum of all factors of 51,440, excluding 51,440?

The factors of the number 51,440 are: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 643, 1286, 2572, 3215, 5144, 6430, 10288, 12860, 25720, 51440.

If you add them up, you will get the total of 51,508. Now subtract 51,440 to get 68,344


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