Q: What is the sum of all factors of the number 678,340 excluding 678,340?
A: 856,340
The factors of the number 678,340 are: 1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2609, 5218, 10436, 13045, 26090, 33917, 52180, 67834, 135668, 169585, 339170, 678340.
If you add them up, you will get the total of 679,196. Now subtract 678,340 to get 856,340