Q: What is the sum of all factors of the number 39,980 excluding 39,980?
A: 44,020
The factors of the number 39,980 are: 1, 2, 4, 5, 10, 20, 1999, 3998, 7996, 9995, 19990, 39980.
If you add them up, you will get the total of 40,024. Now subtract 39,980 to get 44,020