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Problems
Contests
National and Regional Contests
PEN Problems
PEN A Problems
107
107
Part of
PEN A Problems
Problems
(1)
A 107
Source:
5/25/2007
Find four positive integers, each not exceeding
70000
70000
70000
and each having more than
100
100
100
divisors.
logarithms
inequalities
rearrangement inequality
Divisibility Theory