Q: What is the sum of all factors of the number 21,400 including 21,400?
A: 50,220
The factors of the number 21,400 are: 1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 107, 200, 214, 428, 535, 856, 1070, 2140, 2675, 4280, 5350, 10700, 21400.
If you add them up, you will get the total of 50,220.