Q: What is the sum of all factors of the number 305,890 excluding 305,890?
A: 293,618
The factors of the number 305,890 are: 1, 2, 5, 10, 13, 26, 65, 130, 169, 181, 338, 362, 845, 905, 1690, 1810, 2353, 4706, 11765, 23530, 30589, 61178, 152945, 305890.
If you add them up, you will get the total of 306,183. Now subtract 305,890 to get 293,618