Q: What is the sum of all factors of the number 1,289,431 excluding 1,289,431?
A: 258,857
The factors of the number 1,289,431 are: 1, 11, 13, 71, 127, 143, 781, 923, 1397, 1651, 9017, 10153, 18161, 99187, 117221, 1289431.
If you add them up, you will get the total of 1,289,689. Now subtract 1,289,431 to get 258,857