Q: What is the sum of all factors of the number 138,420 including 138,420?
A: 420,420
The factors of the number 138,420 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 769, 1538, 2307, 3076, 3845, 4614, 6921, 7690, 9228, 11535, 13842, 15380, 23070, 27684, 34605, 46140, 69210, 138420.
If you add them up, you will get the total of 420,420.