Q: What is the sum of all factors of the number 405,520 including 405,520?

A: 975,384

Why is 975,384 the sum of all factors of 405,520, including 405,520?

The factors of the number 405,520 are: 1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 137, 148, 185, 274, 296, 370, 548, 592, 685, 740, 1096, 1370, 1480, 2192, 2740, 2960, 5069, 5480, 10138, 10960, 20276, 25345, 40552, 50690, 81104, 101380, 202760, 405520.

If you add them up, you will get the total of 975,384.