Q: What is the sum of all factors of the number 684 excluding 684?
A: 1,136
The factors of the number 684 are: 1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 342, 684.
If you add them up, you will get the total of 685. Now subtract 684 to get 1,136