Q: What is the sum of all factors of the number 21,672 including 21,672?

A: 68,640

Why is 68,640 the sum of all factors of 21,672, including 21,672?

The factors of the number 21,672 are: 1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 28, 36, 42, 43, 56, 63, 72, 84, 86, 126, 129, 168, 172, 252, 258, 301, 344, 387, 504, 516, 602, 774, 903, 1032, 1204, 1548, 1806, 2408, 2709, 3096, 3612, 5418, 7224, 10836, 21672.

If you add them up, you will get the total of 68,640.