Q: What is the sum of all factors of the number 99,990 excluding 99,990?

A: 186,426

Why is 186,426 the sum of all factors of 99,990, excluding 99,990?

The factors of the number 99,990 are: 1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 101, 110, 165, 198, 202, 303, 330, 495, 505, 606, 909, 990, 1010, 1111, 1515, 1818, 2222, 3030, 3333, 4545, 5555, 6666, 9090, 9999, 11110, 16665, 19998, 33330, 49995, 99990.

If you add them up, you will get the total of 100,176. Now subtract 99,990 to get 186,426