Q: What is the sum of all factors of the number 520,405,105 excluding 520,405,105?

 A: 200,927,759

Why is 200,927,759 the sum of all factors of 520,405,105, excluding 520,405,105?

The factors of the number 520,405,105 are: 1, 5, 11, 17, 55, 85, 187, 935, 556583, 2782915, 6122413, 9461911, 30612065, 47309555, 104081021, 520405105.

If you add them up, you will get the total of 520,405,305. Now subtract 520,405,105 to get 200,927,759


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