Q: What is the sum of all factors of the number 151,221 excluding 151,221?
A: 91,979
The factors of the number 151,221 are: 1, 3, 7, 19, 21, 57, 133, 379, 399, 1137, 2653, 7201, 7959, 21603, 50407, 151221.
If you add them up, you will get the total of 151,312. Now subtract 151,221 to get 91,979