Q: What is the sum of all factors of the number 1,900 excluding 1,900?
A: 2,440
The factors of the number 1,900 are: 1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 380, 475, 950, 1900.
If you add them up, you will get the total of 1,902. Now subtract 1,900 to get 2,440