Q: What is the sum of all factors of the number 123,512,420 excluding 123,512,420?
A: 138,781,780
The factors of the number 123,512,420 are: 1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 69389, 138778, 277556, 346945, 693890, 1387780, 6175621, 12351242, 24702484, 30878105, 61756210, 123512420.
If you add them up, you will get the total of 123,512,558. Now subtract 123,512,420 to get 138,781,780