Q: What is the sum of all factors of the number 2,180 excluding 2,180?
A: 2,440
The factors of the number 2,180 are: 1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180.
If you add them up, you will get the total of 2,182. Now subtract 2,180 to get 2,440