Q: What is the sum of all factors of the number 216,400,405 including 216,400,405?

A: 296,755,200

Why is 296,755,200 the sum of all factors of 216,400,405, including 216,400,405?

The factors of the number 216,400,405 are: 1, 5, 13, 19, 65, 95, 137, 247, 685, 1235, 1279, 1781, 2603, 6395, 8905, 13015, 16627, 24301, 33839, 83135, 121505, 169195, 175223, 315913, 876115, 1579565, 2277899, 3329237, 11389495, 16646185, 43280081, 216400405.

If you add them up, you will get the total of 296,755,200.