Q: What is the sum of all factors of the number 307,880 excluding 307,880?
A: 404,920
The factors of the number 307,880 are: 1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 179, 215, 344, 358, 430, 716, 860, 895, 1432, 1720, 1790, 3580, 7160, 7697, 15394, 30788, 38485, 61576, 76970, 153940, 307880.
If you add them up, you will get the total of 308,284. Now subtract 307,880 to get 404,920