Q: What is the sum of all factors of the number 561,280 excluding 561,280?

 A: 782,060

Why is 782,060 the sum of all factors of 561,280, excluding 561,280?

The factors of the number 561,280 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 877, 1754, 3508, 4385, 7016, 8770, 14032, 17540, 28064, 35080, 56128, 70160, 112256, 140320, 280640, 561280.

If you add them up, you will get the total of 562,062. Now subtract 561,280 to get 782,060


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