perplexus.info :: Just Math : Composite Integer Conclusion

Composite Integer Conclusion (Posted on 2016-01-18)

Find all possible values of a composite positive integer N such that every divisor, D, of N (excluding N) satisfies:
N-20 ≤ D ≤ N-12

Submitted by K Sengupta

Rating: 5.0000 (1 votes)

Solution: (Hide)

N=21 and N=25 are the only solutions.
For an explanation, refer to the solution submitted by Brian Smith in this location.

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
Solution	Brian Smith	2016-01-18 11:53:55
Not in the least sure.	broll	2016-01-18 10:44:24

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