Q: What is the sum of all factors of the number 7,840 including 7,840?
A: 21,546
The factors of the number 7,840 are: 1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 7840.
If you add them up, you will get the total of 21,546.