Q: What is the sum of all factors of the number 615,727,240 excluding 615,727,240?

 A: 769,659,140

Why is 769,659,140 the sum of all factors of 615,727,240, excluding 615,727,240?

The factors of the number 615,727,240 are: 1, 2, 4, 5, 8, 10, 20, 40, 15393181, 30786362, 61572724, 76965905, 123145448, 153931810, 307863620, 615727240.

If you add them up, you will get the total of 615,728,009. Now subtract 615,727,240 to get 769,659,140


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