MathDB
Problems
Contests
National and Regional Contests
PEN Problems
PEN A Problems
74
74
Part of
PEN A Problems
Problems
(1)
A 74
Source:
5/25/2007
Find an integer
n
n
n
, where
100
≤
n
≤
1997
100 \leq n \leq 1997
100
≤
n
≤
1997
, such that
2
n
+
2
n
\frac{2^{n}+2}{n}
n
2
n
+
2
is also an integer.
Divisibility Theory