Q: What is the sum of all factors of the number 1,212,561 excluding 1,212,561?
A: 896,559
The factors of the number 1,212,561 are: 1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1013, 1197, 3039, 7091, 9117, 19247, 21273, 57741, 63819, 134729, 173223, 404187, 1212561.
If you add them up, you will get the total of 1,213,457. Now subtract 1,212,561 to get 896,559