Q: What is the sum of all factors of the number 1,287,810 excluding 1,287,810?

A: 2,151,990

Why is 2,151,990 the sum of all factors of 1,287,810, excluding 1,287,810?

The factors of the number 1,287,810 are: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 41, 45, 82, 90, 123, 205, 246, 349, 369, 410, 615, 698, 738, 1047, 1230, 1745, 1845, 2094, 3141, 3490, 3690, 5235, 6282, 10470, 14309, 15705, 28618, 31410, 42927, 71545, 85854, 128781, 143090, 214635, 257562, 429270, 643905, 1287810.

If you add them up, you will get the total of 1,287,812. Now subtract 1,287,810 to get 2,151,990