Q: What is the sum of all factors of the number 123,131,421 excluding 123,131,421?
A: 87,083,331
The factors of the number 123,131,421 are: 1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 217163, 651489, 1520141, 1954467, 4560423, 5863401, 13681269, 17590203, 41043807, 123131421.
If you add them up, you will get the total of 123,131,508. Now subtract 123,131,421 to get 87,083,331