Q: What is the sum of all factors of the number 2,680 excluding 2,680?
A: 3,440
The factors of the number 2,680 are: 1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680.
If you add them up, you will get the total of 2,683. Now subtract 2,680 to get 3,440