Q: What is the sum of all factors of the number 381,280 excluding 381,280?

 A: 519,872

Why is 519,872 the sum of all factors of 381,280, excluding 381,280?

The factors of the number 381,280 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 2383, 4766, 9532, 11915, 19064, 23830, 38128, 47660, 76256, 95320, 190640, 381280.

If you add them up, you will get the total of 381,799. Now subtract 381,280 to get 519,872


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