Q: What is the sum of all factors of the number 420,540,441 excluding 420,540,441?

A: 208,340,967

Why is 208,340,967 the sum of all factors of 420,540,441, excluding 420,540,441?

The factors of the number 420,540,441 are: 1, 3, 17, 23, 51, 67, 69, 201, 391, 1139, 1173, 1541, 3417, 4623, 5351, 16053, 26197, 78591, 90967, 123073, 272901, 358517, 369219, 1075551, 2092241, 6094789, 6276723, 8245891, 18284367, 24737673, 140180147, 420540441.

If you add them up, you will get the total of 420,540,649. Now subtract 420,540,441 to get 208,340,967