Q: What is the sum of all factors of the number 420,800 excluding 420,800?

A: 618,568

Why is 618,568 the sum of all factors of 420,800, excluding 420,800?

The factors of the number 420,800 are: 1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 263, 320, 400, 526, 800, 1052, 1315, 1600, 2104, 2630, 4208, 5260, 6575, 8416, 10520, 13150, 16832, 21040, 26300, 42080, 52600, 84160, 105200, 210400, 420800.

If you add them up, you will get the total of 421,418. Now subtract 420,800 to get 618,568