Q: What is the sum of all factors of the number 12,864,780 excluding 12,864,780?

A: 26,158,932

Why is 26,158,932 the sum of all factors of 12,864,780, excluding 12,864,780?

The factors of the number 12,864,780 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 71471, 142942, 214413, 285884, 357355, 428826, 643239, 714710, 857652, 1072065, 1286478, 1429420, 2144130, 2572956, 3216195, 4288260, 6432390, 12864780.

If you add them up, you will get the total of 12,864,806. Now subtract 12,864,780 to get 26,158,932