Q: What is the sum of all factors of the number 111,780 excluding 111,780?

A: 255,132

Why is 255,132 the sum of all factors of 111,780, excluding 111,780?

The factors of the number 111,780 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 27, 30, 36, 45, 46, 54, 60, 69, 81, 90, 92, 108, 115, 135, 138, 162, 180, 207, 230, 243, 270, 276, 324, 345, 405, 414, 460, 486, 540, 621, 690, 810, 828, 972, 1035, 1215, 1242, 1380, 1620, 1863, 2070, 2430, 2484, 3105, 3726, 4140, 4860, 5589, 6210, 7452, 9315, 11178, 12420, 18630, 22356, 27945, 37260, 55890, 111780.

If you add them up, you will get the total of 112,035. Now subtract 111,780 to get 255,132