Q: What is the sum of all factors of the number 180,540 excluding 180,540?

A: 409,140

Why is 409,140 the sum of all factors of 180,540, excluding 180,540?

The factors of the number 180,540 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 59, 60, 68, 85, 90, 102, 118, 153, 170, 177, 180, 204, 236, 255, 295, 306, 340, 354, 510, 531, 590, 612, 708, 765, 885, 1003, 1020, 1062, 1180, 1530, 1770, 2006, 2124, 2655, 3009, 3060, 3540, 4012, 5015, 5310, 6018, 9027, 10030, 10620, 12036, 15045, 18054, 20060, 30090, 36108, 45135, 60180, 90270, 180540.

If you add them up, you will get the total of 180,949. Now subtract 180,540 to get 409,140