Q: What is the sum of all factors of the number 72,181,421 excluding 72,181,421?

 A: 6,420,007

Why is 6,420,007 the sum of all factors of 72,181,421, excluding 72,181,421?

The factors of the number 72,181,421 are: 1, 13, 169, 193, 2213, 2509, 28769, 32617, 373997, 427109, 5552417, 72181421.

If you add them up, you will get the total of 72,181,427. Now subtract 72,181,421 to get 6,420,007


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