Q: What is the sum of all factors of the number 20,520,040 excluding 20,520,040?

 A: 25,650,140

Why is 25,650,140 the sum of all factors of 20,520,040, excluding 20,520,040?

The factors of the number 20,520,040 are: 1, 2, 4, 5, 8, 10, 20, 40, 513001, 1026002, 2052004, 2565005, 4104008, 5130010, 10260020, 20520040.

If you add them up, you will get the total of 20,520,065. Now subtract 20,520,040 to get 25,650,140


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