Q: What is the sum of all factors of the number 668,660 excluding 668,660?

 A: 759,340

Why is 759,340 the sum of all factors of 668,660, excluding 668,660?

The factors of the number 668,660 are: 1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 499, 670, 998, 1340, 1996, 2495, 4990, 9980, 33433, 66866, 133732, 167165, 334330, 668660.

If you add them up, you will get the total of 669,419. Now subtract 668,660 to get 759,340


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