Q: What is the sum of all factors of the number 421,053,330 excluding 421,053,330?

A: 590,215,470

Why is 590,215,470 the sum of all factors of 421,053,330, excluding 421,053,330?

The factors of the number 421,053,330 are: 1, 2, 3, 5, 6, 10, 15, 30, 1619, 3238, 4857, 8095, 8669, 9714, 16190, 17338, 24285, 26007, 43345, 48570, 52014, 86690, 130035, 260070, 14035111, 28070222, 42105333, 70175555, 84210666, 140351110, 210526665, 421053330.

If you add them up, you will get the total of 421,053,920. Now subtract 421,053,330 to get 590,215,470