Q: What is the sum of all factors of the number 431,080 excluding 431,080?

 A: 614,720

Why is 614,720 the sum of all factors of 431,080, excluding 431,080?

The factors of the number 431,080 are: 1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 829, 1658, 3316, 4145, 6632, 8290, 10777, 16580, 21554, 33160, 43108, 53885, 86216, 107770, 215540, 431080.

If you add them up, you will get the total of 431,694. Now subtract 431,080 to get 614,720


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