Q: What is the sum of all factors of the number 128,041,355 excluding 128,041,355?

Why is 39,902,869 the sum of all factors of 128,041,355, excluding 128,041,355?

The factors of the number 128,041,355 are: 1, 5, 13, 65, 67, 335, 871, 4355, 29401, 147005, 382213, 1911065, 1969867, 9849335, 25608271, 128041355.

If you add them up, you will get the total of 128,041,394. Now subtract 128,041,355 to get 39,902,869

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