Q: What is the sum of all factors of the number 1,209,639 excluding 1,209,639?
A: 513,753
The factors of the number 1,209,639 are: 1, 3, 23, 47, 69, 141, 373, 1081, 1119, 3243, 8579, 17531, 25737, 52593, 403213, 1209639.
If you add them up, you will get the total of 1,210,152. Now subtract 1,209,639 to get 513,753