Q: What is the sum of all factors of the number 20,850 excluding 20,850?

 A: 31,230

Why is 31,230 the sum of all factors of 20,850, excluding 20,850?

The factors of the number 20,850 are: 1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 139, 150, 278, 417, 695, 834, 1390, 2085, 3475, 4170, 6950, 10425, 20850.

If you add them up, you will get the total of 20,881. Now subtract 20,850 to get 31,230


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