Q: What is the sum of all factors of the number 209,640 excluding 209,640?
A: 419,640
The factors of the number 209,640 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 1747, 3494, 5241, 6988, 8735, 10482, 13976, 17470, 20964, 26205, 34940, 41928, 52410, 69880, 104820, 209640.
If you add them up, you will get the total of 210,059. Now subtract 209,640 to get 419,640