Q: What is the sum of all factors of the number 39,840 including 39,840?

A: 127,008

Why is 127,008 the sum of all factors of 39,840, including 39,840?

The factors of the number 39,840 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 83, 96, 120, 160, 166, 240, 249, 332, 415, 480, 498, 664, 830, 996, 1245, 1328, 1660, 1992, 2490, 2656, 3320, 3984, 4980, 6640, 7968, 9960, 13280, 19920, 39840.

If you add them up, you will get the total of 127,008.