Q: What is the sum of all factors of the number 129,381 excluding 129,381?

 A: 72,987

Why is 72,987 the sum of all factors of 129,381, excluding 129,381?

The factors of the number 129,381 are: 1, 3, 7, 21, 61, 101, 183, 303, 427, 707, 1281, 2121, 6161, 18483, 43127, 129381.

If you add them up, you will get the total of 129,453. Now subtract 129,381 to get 72,987


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