Q: What is the sum of all factors of the number 420,640,265 excluding 420,640,265?

A: 126,219,895

Why is 126,219,895 the sum of all factors of 420,640,265, excluding 420,640,265?

The factors of the number 420,640,265 are: 1, 5, 17, 83, 85, 109, 415, 545, 547, 1411, 1853, 2735, 7055, 9047, 9265, 9299, 45235, 45401, 46495, 59623, 153799, 227005, 298115, 768995, 771817, 1013591, 3859085, 4948709, 5067955, 24743545, 84128053, 420640265.

If you add them up, you will get the total of 420,640,391. Now subtract 420,640,265 to get 126,219,895