Q: What is the sum of all factors of the number 8,140 excluding 8,140?

 A: 11,012

Why is 11,012 the sum of all factors of 8,140, excluding 8,140?

The factors of the number 8,140 are: 1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 148, 185, 220, 370, 407, 740, 814, 1628, 2035, 4070, 8140.

If you add them up, you will get the total of 8,151. Now subtract 8,140 to get 11,012


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