Q: What is the sum of all factors of the number 639,972 including 639,972?
A: 1,676,220
The factors of the number 639,972 are: 1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 58, 87, 116, 174, 261, 348, 522, 613, 1044, 1226, 1839, 2452, 3678, 5517, 7356, 11034, 17777, 22068, 35554, 53331, 71108, 106662, 159993, 213324, 319986, 639972.
If you add them up, you will get the total of 1,676,220.