Q: What is the sum of all factors of the number 1,668 excluding 1,668?
A: 2,252
The factors of the number 1,668 are: 1, 2, 3, 4, 6, 12, 139, 278, 417, 556, 834, 1668.
If you add them up, you will get the total of 1,670. Now subtract 1,668 to get 2,252