Q: What is the sum of all factors of the number 387,800 excluding 387,800?

A: 646,360

Why is 646,360 the sum of all factors of 387,800, excluding 387,800?

The factors of the number 387,800 are: 1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 140, 175, 200, 277, 280, 350, 554, 700, 1108, 1385, 1400, 1939, 2216, 2770, 3878, 5540, 6925, 7756, 9695, 11080, 13850, 15512, 19390, 27700, 38780, 48475, 55400, 77560, 96950, 193900, 387800.

If you add them up, you will get the total of 388,446. Now subtract 387,800 to get 646,360