Q: What is the sum of all factors of the number 1,998,561 excluding 1,998,561?
A: 666,191
The factors of the number 1,998,561 are: 1, 3, 666187, 1998561.
If you add them up, you will get the total of 1,999,227. Now subtract 1,998,561 to get 666,191