Q: What is the sum of all factors of the number 9,945 including 9,945?
A: 19,656
The factors of the number 9,945 are: 1, 3, 5, 9, 13, 15, 17, 39, 45, 51, 65, 85, 117, 153, 195, 221, 255, 585, 663, 765, 1105, 1989, 3315, 9945.
If you add them up, you will get the total of 19,656.