Q: What is the sum of all factors of the number 421,253,001 excluding 421,253,001?

A: 253,381,239

Why is 253,381,239 the sum of all factors of 421,253,001, excluding 421,253,001?

The factors of the number 421,253,001 are: 1, 3, 9, 13, 27, 39, 117, 281, 351, 843, 2529, 3653, 4271, 7587, 10959, 12813, 32877, 38439, 55523, 98631, 115317, 166569, 499707, 1200151, 1499121, 3600453, 10801359, 15601963, 32404077, 46805889, 140417667, 421253001.

If you add them up, you will get the total of 421,253,254. Now subtract 421,253,001 to get 253,381,239