Q: What is the sum of all factors of the number 261,253,560 excluding 261,253,560?

A: 522,507,480

Why is 522,507,480 the sum of all factors of 261,253,560, excluding 261,253,560?

The factors of the number 261,253,560 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 2177113, 4354226, 6531339, 8708452, 10885565, 13062678, 17416904, 21771130, 26125356, 32656695, 43542260, 52250712, 65313390, 87084520, 130626780, 261253560.

If you add them up, you will get the total of 261,254,082. Now subtract 261,253,560 to get 522,507,480