Q: What is the sum of all factors of the number 9,860 excluding 9,860?
A: 12,820
The factors of the number 9,860 are: 1, 2, 4, 5, 10, 17, 20, 29, 34, 58, 68, 85, 116, 145, 170, 290, 340, 493, 580, 986, 1972, 2465, 4930, 9860.
If you add them up, you will get the total of 9,872. Now subtract 9,860 to get 12,820