Q: What is the sum of all factors of the number 27,980 excluding 27,980?
A: 30,820
The factors of the number 27,980 are: 1, 2, 4, 5, 10, 20, 1399, 2798, 5596, 6995, 13990, 27980.
If you add them up, you will get the total of 28,010. Now subtract 27,980 to get 30,820