Q: What is the sum of all factors of the number 257,520,258 excluding 257,520,258?

 A: 300,440,340

Why is 300,440,340 the sum of all factors of 257,520,258, excluding 257,520,258?

The factors of the number 257,520,258 are: 1, 2, 3, 6, 9, 18, 14306681, 28613362, 42920043, 85840086, 128760129, 257520258.

If you add them up, you will get the total of 257,520,558. Now subtract 257,520,258 to get 300,440,340


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