Q: What is the sum of all factors of the number 21,617,840 excluding 21,617,840?

 A: 28,643,824

Why is 28,643,824 the sum of all factors of 21,617,840, excluding 21,617,840?

The factors of the number 21,617,840 are: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 270223, 540446, 1080892, 1351115, 2161784, 2702230, 4323568, 5404460, 10808920, 21617840.

If you add them up, you will get the total of 21,617,868. Now subtract 21,617,840 to get 28,643,824


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