Q: What is the sum of all factors of the number 402,143,320 excluding 402,143,320?

A: 506,223,080

Why is 506,223,080 the sum of all factors of 402,143,320, excluding 402,143,320?

The factors of the number 402,143,320 are: 1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 10280, 39119, 78238, 156476, 195595, 312952, 391190, 782380, 1564760, 10053583, 20107166, 40214332, 50267915, 80428664, 100535830, 201071660, 402143320.

If you add them up, you will get the total of 402,143,826. Now subtract 402,143,320 to get 506,223,080