Q: What is the sum of all factors of the number 1,219,780 excluding 1,219,780?
A: 1,380,860
The factors of the number 1,219,780 are: 1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 859, 1420, 1718, 3436, 4295, 8590, 17180, 60989, 121978, 243956, 304945, 609890, 1219780.
If you add them up, you will get the total of 1,219,781. Now subtract 1,219,780 to get 1,380,860