Q: What is the sum of all factors of the number 28,720,721 excluding 28,720,721?
A: 1,386,223
The factors of the number 28,720,721 are: 1, 23, 227, 5221, 5501, 126523, 1248727, 28720721.
If you add them up, you will get the total of 28,720,722. Now subtract 28,720,721 to get 1,386,223