Q: What is the sum of all factors of the number 128,420 including 128,420?
A: 269,724
The factors of the number 128,420 are: 1, 2, 4, 5, 10, 20, 6421, 12842, 25684, 32105, 64210, 128420.
If you add them up, you will get the total of 269,724.