Q: What is the sum of all factors of the number 21,003,525 excluding 21,003,525?

A: 16,863,967

Why is 16,863,967 the sum of all factors of 21,003,525, excluding 21,003,525?

The factors of the number 21,003,525 are: 1, 3, 5, 9, 15, 25, 45, 75, 225, 277, 337, 831, 1011, 1385, 1685, 2493, 3033, 4155, 5055, 6925, 8425, 12465, 15165, 20775, 25275, 62325, 75825, 93349, 280047, 466745, 840141, 1400235, 2333725, 4200705, 7001175, 21003525.

If you add them up, you will get the total of 21,003,541. Now subtract 21,003,525 to get 16,863,967