2015 China South East MO Grade 11 P4
Source: 2015 China South East MO Grade 11 P4
January 16, 2018
number theory
Problem Statement
Given pairwise distinct positive integers such that the greatest common divisor of any three of them is equal to . Show that there exists positive integer and pairwise distinct positive integers with the greatest common divisor of all numbers equal to such that for any positive integers , there exists positive integers that .