Q: What is the sum of all factors of the number 20,978,385 excluding 20,978,385?

 A: 12,587,055

Why is 12,587,055 the sum of all factors of 20,978,385, excluding 20,978,385?

The factors of the number 20,978,385 are: 1, 3, 5, 15, 1398559, 4195677, 6992795, 20978385.

If you add them up, you will get the total of 20,978,397. Now subtract 20,978,385 to get 12,587,055


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