Q: What is the sum of all factors of the number 16,840 excluding 16,840?
A: 21,140
The factors of the number 16,840 are: 1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1684, 2105, 3368, 4210, 8420, 16840.
If you add them up, you will get the total of 16,861. Now subtract 16,840 to get 21,140