Q: What is the sum of all factors of the number 285,920 excluding 285,920?

 A: 389,944

Why is 389,944 the sum of all factors of 285,920, excluding 285,920?

The factors of the number 285,920 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 1787, 3574, 7148, 8935, 14296, 17870, 28592, 35740, 57184, 71480, 142960, 285920.

If you add them up, you will get the total of 286,309. Now subtract 285,920 to get 389,944


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