Q: What is the sum of all factors of the number 309,740 including 309,740?
A: 689,472
The factors of the number 309,740 are: 1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 911, 1822, 3644, 4555, 9110, 15487, 18220, 30974, 61948, 77435, 154870, 309740.
If you add them up, you will get the total of 689,472.