Q: What is the sum of all factors of the number 420,678 excluding 420,678?
A: 490,830
The factors of the number 420,678 are: 1, 2, 3, 6, 9, 18, 23371, 46742, 70113, 140226, 210339, 420678.
If you add them up, you will get the total of 421,168. Now subtract 420,678 to get 490,830