Q: What is the sum of all factors of the number 128,439 excluding 128,439?
A: 67,401
The factors of the number 128,439 are: 1, 3, 9, 27, 67, 71, 201, 213, 603, 639, 1809, 1917, 4757, 14271, 42813, 128439.
If you add them up, you will get the total of 128,506. Now subtract 128,439 to get 67,401