Q: What is the sum of all factors of the number 1,561,840 including 1,561,840?

A: 4,151,520

Why is 4,151,520 the sum of all factors of 1,561,840, including 1,561,840?

The factors of the number 1,561,840 are: 1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 2789, 5578, 11156, 13945, 19523, 22312, 27890, 39046, 44624, 55780, 78092, 97615, 111560, 156184, 195230, 223120, 312368, 390460, 780920, 1561840.

If you add them up, you will get the total of 4,151,520.