Q: What is the sum of all factors of the number 540,404,020 excluding 540,404,020?

A: 684,891,548

Why is 684,891,548 the sum of all factors of 540,404,020, excluding 540,404,020?

The factors of the number 540,404,020 are: 1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 421, 842, 1684, 2105, 4210, 4937, 5473, 8420, 9874, 10946, 19748, 21892, 24685, 27365, 49370, 54730, 64181, 98740, 109460, 128362, 256724, 320905, 641810, 1283620, 2078477, 4156954, 8313908, 10392385, 20784770, 27020201, 41569540, 54040402, 108080804, 135101005, 270202010, 540404020.

If you add them up, you will get the total of 540,404,704. Now subtract 540,404,020 to get 684,891,548