Q: What is the sum of all factors of the number 257,720,522 excluding 257,720,522?

A: 155,703,478

Why is 155,703,478 the sum of all factors of 257,720,522, excluding 257,720,522?

The factors of the number 257,720,522 are: 1, 2, 19, 38, 173, 197, 199, 346, 394, 398, 3287, 3743, 3781, 6574, 7486, 7562, 34081, 34427, 39203, 68162, 68854, 78406, 647539, 654113, 744857, 1295078, 1308226, 1489714, 6782119, 13564238, 128860261, 257720522.

If you add them up, you will get the total of 257,720,677. Now subtract 257,720,522 to get 155,703,478