Q: What is the sum of all factors of the number 331,221,009 excluding 331,221,009?

A: 189,667,311

Why is 189,667,311 the sum of all factors of 331,221,009, excluding 331,221,009?

The factors of the number 331,221,009 are: 1, 3, 7, 21, 53, 79, 159, 237, 371, 553, 1113, 1659, 3767, 4187, 11301, 12561, 26369, 29309, 79107, 87927, 199651, 297593, 598953, 892779, 1397557, 2083151, 4192671, 6249453, 15772429, 47317287, 110407003, 331221009.

If you add them up, you will get the total of 331,221,198. Now subtract 331,221,009 to get 189,667,311