Q: What is the sum of all factors of the number 393,920 excluding 393,920?

 A: 544,864

Why is 544,864 the sum of all factors of 393,920, excluding 393,920?

The factors of the number 393,920 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 1231, 2462, 4924, 6155, 9848, 12310, 19696, 24620, 39392, 49240, 78784, 98480, 196960, 393920.

If you add them up, you will get the total of 394,464. Now subtract 393,920 to get 544,864


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