Q: What is the sum of all factors of the number 28,640 excluding 28,640?

 A: 39,400

Why is 39,400 the sum of all factors of 28,640, excluding 28,640?

The factors of the number 28,640 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 179, 358, 716, 895, 1432, 1790, 2864, 3580, 5728, 7160, 14320, 28640.

If you add them up, you will get the total of 28,679. Now subtract 28,640 to get 39,400


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