Q: What is the sum of all factors of the number 211,978 excluding 211,978?
A: 142,838
The factors of the number 211,978 are: 1, 2, 13, 26, 31, 62, 263, 403, 526, 806, 3419, 6838, 8153, 16306, 105989, 211978.
If you add them up, you will get the total of 212,120. Now subtract 211,978 to get 142,838