Q: What is the sum of all factors of the number 391,640 including 391,640?
A: 881,280
The factors of the number 391,640 are: 1, 2, 4, 5, 8, 10, 20, 40, 9791, 19582, 39164, 48955, 78328, 97910, 195820, 391640.
If you add them up, you will get the total of 881,280.