Q: What is the sum of all factors of the number 13,880 including 13,880?
A: 31,320
The factors of the number 13,880 are: 1, 2, 4, 5, 8, 10, 20, 40, 347, 694, 1388, 1735, 2776, 3470, 6940, 13880.
If you add them up, you will get the total of 31,320.