Q: What is the sum of all factors of the number 531,505,720 excluding 531,505,720?

 A: 664,382,240

Why is 664,382,240 the sum of all factors of 531,505,720, excluding 531,505,720?

The factors of the number 531,505,720 are: 1, 2, 4, 5, 8, 10, 20, 40, 13287643, 26575286, 53150572, 66438215, 106301144, 132876430, 265752860, 531505720.

If you add them up, you will get the total of 531,506,384. Now subtract 531,505,720 to get 664,382,240


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