Q: What is the sum of all factors of the number 420,201,645 excluding 420,201,645?

 A: 254,318,355

Why is 254,318,355 the sum of all factors of 420,201,645, excluding 420,201,645?

The factors of the number 420,201,645 are: 1, 3, 5, 15, 307, 921, 1535, 4605, 91249, 273747, 456245, 1368735, 28013443, 84040329, 140067215, 420201645.

If you add them up, you will get the total of 420,201,899. Now subtract 420,201,645 to get 254,318,355


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