Q: What is the sum of all factors of the number 681,220 excluding 681,220?

 A: 749,384

Why is 749,384 the sum of all factors of 681,220, excluding 681,220?

The factors of the number 681,220 are: 1, 2, 4, 5, 10, 20, 34061, 68122, 136244, 170305, 340610, 681220.

If you add them up, you will get the total of 681,969. Now subtract 681,220 to get 749,384


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