Q: What is the sum of all factors of the number 1,212 excluding 1,212?
A: 1,644
The factors of the number 1,212 are: 1, 2, 3, 4, 6, 12, 101, 202, 303, 404, 606, 1212.
If you add them up, you will get the total of 1,213. Now subtract 1,212 to get 1,644