Q: What is the sum of all factors of the number 1,273,209 excluding 1,273,209?
A: 769,671
The factors of the number 1,273,209 are: 1, 3, 7, 19, 21, 57, 133, 399, 3191, 9573, 22337, 60629, 67011, 181887, 424403, 1273209.
If you add them up, you will get the total of 1,273,978. Now subtract 1,273,209 to get 769,671