Q: What is the sum of all factors of the number 135,999 excluding 135,999?
A: 78,897
The factors of the number 135,999 are: 1, 3, 9, 23, 27, 69, 73, 81, 207, 219, 621, 657, 1679, 1863, 1971, 5037, 5913, 15111, 45333, 135999.
If you add them up, you will get the total of 136,077. Now subtract 135,999 to get 78,897