Q: What is the sum of all factors of the number 421,505,225 excluding 421,505,225?
A: 131,906,899
The factors of the number 421,505,225 are: 1, 5, 17, 25, 85, 425, 991777, 4958885, 16860209, 24794425, 84301045, 421505225.
If you add them up, you will get the total of 421,505,356. Now subtract 421,505,225 to get 131,906,899