Q: What is the sum of all factors of the number 213,120,243 excluding 213,120,243?
A: 138,697,405
The factors of the number 213,120,243 are: 1, 3, 7, 9, 21, 63, 3382861, 10148583, 23680027, 30445749, 71040081, 213120243.
If you add them up, you will get the total of 213,120,381. Now subtract 213,120,243 to get 138,697,405