Q: What is the sum of all factors of the number 21,100,724 excluding 21,100,724?

 A: 15,947,980

Why is 15,947,980 the sum of all factors of 21,100,724, excluding 21,100,724?

The factors of the number 21,100,724 are: 1, 2, 4, 307, 614, 1228, 17183, 34366, 68732, 5275181, 10550362, 21100724.

If you add them up, you will get the total of 21,100,739. Now subtract 21,100,724 to get 15,947,980


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