Q: What is the sum of all factors of the number 561,234,261 excluding 561,234,261?

A: 328,441,515

Why is 328,441,515 the sum of all factors of 561,234,261, excluding 561,234,261?

The factors of the number 561,234,261 are: 1, 3, 7, 21, 31, 93, 131, 217, 393, 651, 917, 2751, 4061, 6581, 12183, 19743, 28427, 46067, 85281, 138201, 204011, 612033, 862111, 1428077, 2586333, 4284231, 6034777, 18104331, 26725441, 80176323, 187078087, 561234261.

If you add them up, you will get the total of 561,234,589. Now subtract 561,234,261 to get 328,441,515