Q: What is the sum of all factors of the number 18,720,208 excluding 18,720,208?

Why is 20,340,660 the sum of all factors of 18,720,208, excluding 18,720,208?

The factors of the number 18,720,208 are: 1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 90001, 180002, 360004, 720008, 1170013, 1440016, 2340026, 4680052, 9360104, 18720208.

If you add them up, you will get the total of 18,720,228. Now subtract 18,720,208 to get 20,340,660

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