Q: What is the sum of all factors of the number 221,021,229 excluding 221,021,229?

A: 128,690,259

Why is 128,690,259 the sum of all factors of 221,021,229, excluding 221,021,229?

The factors of the number 221,021,229 are: 1, 3, 11, 13, 33, 39, 101, 143, 303, 429, 1111, 1313, 3333, 3939, 5101, 14443, 15303, 43329, 56111, 66313, 168333, 198939, 515201, 729443, 1545603, 2188329, 5667211, 6697613, 17001633, 20092839, 73673743, 221021229.

If you add them up, you will get the total of 221,021,357. Now subtract 221,021,229 to get 128,690,259