Q: What is the sum of all factors of the number 21,404,209 excluding 21,404,209?
A: 513,743
The factors of the number 21,404,209 are: 1, 53, 223, 1811, 11819, 95983, 403853, 21404209.
If you add them up, you will get the total of 21,404,722. Now subtract 21,404,209 to get 513,743