The sum of all positive factors of a number is 124. Which statement is correct?

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1. A.

   Exactly one such number exists, and it is between 40 and 50

2. B.

   Exactly one such number exists, and it is between 50 and 60

3. C.

   Exactly one such number exists, and it is between 60 and 80

4. D.

   More than one such number exists

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