Q: What is the sum of all factors of the number 668,668 excluding 668,668?

A: 911,876

Why is 911,876 the sum of all factors of 668,668, excluding 668,668?

The factors of the number 668,668 are: 1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 167, 182, 286, 308, 334, 364, 572, 668, 1001, 1169, 1837, 2002, 2171, 2338, 3674, 4004, 4342, 4676, 7348, 8684, 12859, 15197, 23881, 25718, 30394, 47762, 51436, 60788, 95524, 167167, 334334, 668668.

If you add them up, you will get the total of 669,579. Now subtract 668,668 to get 911,876