Q: What is the sum of all factors of the number 243,990 excluding 243,990?
A: 390,618
The factors of the number 243,990 are: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 2711, 5422, 8133, 13555, 16266, 24399, 27110, 40665, 48798, 81330, 121995, 243990.
If you add them up, you will get the total of 244,380. Now subtract 243,990 to get 390,618