Q: What is the sum of all factors of the number 21,175 excluding 21,175?
A: 11,809
The factors of the number 21,175 are: 1, 5, 7, 11, 25, 35, 55, 77, 121, 175, 275, 385, 605, 847, 1925, 3025, 4235, 21175.
If you add them up, you will get the total of 21,186. Now subtract 21,175 to get 11,809