Q: What is the sum of all factors of the number 137,780 excluding 137,780?
A: 155,086
The factors of the number 137,780 are: 1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 6889, 13778, 27556, 34445, 68890, 137780.
If you add them up, you will get the total of 137,935. Now subtract 137,780 to get 155,086