Q: What is the sum of all factors of the number 215,421,154 excluding 215,421,154?

A: 140,382,686

Why is 140,382,686 the sum of all factors of 215,421,154, excluding 215,421,154?

The factors of the number 215,421,154 are: 1, 2, 13, 26, 59, 118, 317, 443, 634, 767, 886, 1534, 4121, 5759, 8242, 11518, 18703, 26137, 37406, 52274, 140431, 243139, 280862, 339781, 486278, 679562, 1825603, 3651206, 8285429, 16570858, 107710577, 215421154.

If you add them up, you will get the total of 215,421,294. Now subtract 215,421,154 to get 140,382,686