Q: What is the sum of all factors of the number 1,305,780 including 1,305,780?

A: 4,179,840

Why is 4,179,840 the sum of all factors of 1,305,780, including 1,305,780?

The factors of the number 1,305,780 are: 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 3109, 6218, 9327, 12436, 15545, 18654, 21763, 31090, 37308, 43526, 46635, 62180, 65289, 87052, 93270, 108815, 130578, 186540, 217630, 261156, 326445, 435260, 652890, 1305780.

If you add them up, you will get the total of 4,179,840.