Q: What is the sum of all factors of the number 21,945 excluding 21,945?
A: 24,135
The factors of the number 21,945 are: 1, 3, 5, 7, 11, 15, 19, 21, 33, 35, 55, 57, 77, 95, 105, 133, 165, 209, 231, 285, 385, 399, 627, 665, 1045, 1155, 1463, 1995, 3135, 4389, 7315, 21945.
If you add them up, you will get the total of 21,969. Now subtract 21,945 to get 24,135