Q: What is the sum of all factors of the number 2,100 excluding 2,100?
A: 4,844
The factors of the number 2,100 are: 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100.
If you add them up, you will get the total of 2,104. Now subtract 2,100 to get 4,844