Q: What is the sum of all factors of the number 3,140 excluding 3,140?
A: 3,496
The factors of the number 3,140 are: 1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140.
If you add them up, you will get the total of 3,143. Now subtract 3,140 to get 3,496