Q: What is the sum of all factors of the number 9,640 including 9,640?
A: 21,780
The factors of the number 9,640 are: 1, 2, 4, 5, 8, 10, 20, 40, 241, 482, 964, 1205, 1928, 2410, 4820, 9640.
If you add them up, you will get the total of 21,780.