Q: What is the sum of all factors of the number 231,435,009 excluding 231,435,009?

A: 139,791,231

Why is 139,791,231 the sum of all factors of 231,435,009, excluding 231,435,009?

The factors of the number 231,435,009 are: 1, 3, 9, 13, 27, 39, 117, 197, 351, 591, 1773, 2561, 3347, 5319, 7683, 10041, 23049, 30123, 43511, 69147, 90369, 130533, 391599, 659359, 1174797, 1978077, 5934231, 8571667, 17802693, 25715001, 77145003, 231435009.

If you add them up, you will get the total of 231,435,148. Now subtract 231,435,009 to get 139,791,231