Q: What is the sum of all factors of the number 643,125 excluding 643,125?

A: 606,475

Why is 606,475 the sum of all factors of 643,125, excluding 643,125?

The factors of the number 643,125 are: 1, 3, 5, 7, 15, 21, 25, 35, 49, 75, 105, 125, 147, 175, 245, 343, 375, 525, 625, 735, 875, 1029, 1225, 1715, 1875, 2625, 3675, 4375, 5145, 6125, 8575, 13125, 18375, 25725, 30625, 42875, 91875, 128625, 214375, 643125.

If you add them up, you will get the total of 643,731. Now subtract 643,125 to get 606,475