Q: What is the sum of all factors of the number 285,720 excluding 285,720?

 A: 571,800

Why is 571,800 the sum of all factors of 285,720, excluding 285,720?

The factors of the number 285,720 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 2381, 4762, 7143, 9524, 11905, 14286, 19048, 23810, 28572, 35715, 47620, 57144, 71430, 95240, 142860, 285720.

If you add them up, you will get the total of 286,291. Now subtract 285,720 to get 571,800


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