Q: What is the sum of all factors of the number 3,440 excluding 3,440?
A: 4,744
The factors of the number 3,440 are: 1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440.
If you add them up, you will get the total of 3,444. Now subtract 3,440 to get 4,744