Q: What is the sum of all factors of the number 207,207 excluding 207,207?

A: 212,121

Why is 212,121 the sum of all factors of 207,207, excluding 207,207?

The factors of the number 207,207 are: 1, 3, 7, 9, 11, 13, 21, 23, 33, 39, 63, 69, 77, 91, 99, 117, 143, 161, 207, 231, 253, 273, 299, 429, 483, 693, 759, 819, 897, 1001, 1287, 1449, 1771, 2093, 2277, 2691, 3003, 3289, 5313, 6279, 9009, 9867, 15939, 18837, 23023, 29601, 69069, 207207.

If you add them up, you will get the total of 207,419. Now subtract 207,207 to get 212,121