Q: What is the sum of all factors of the number 309,790 excluding 309,790?
A: 290,978
The factors of the number 309,790 are: 1, 2, 5, 10, 13, 26, 65, 130, 2383, 4766, 11915, 23830, 30979, 61958, 154895, 309790.
If you add them up, you will get the total of 310,080. Now subtract 309,790 to get 290,978