题意:有一个序列(a1,a2...ana_1,a_2...a_na1,a2...an),长度<10510^5105,有q个询问(q<10610^6106),每个询问给定l,r输出gcd(al,al+1...ara_l,a_{l+1}...a_ral,al+1...ar),和有多少对l′,r′l^{'},r^{'}l′,r′满足gcd(al′,al′+1...ar′a_{l^{'}},a_{l^{'}+1}...a_{r^{'}}al′,al′+1...ar′)=gcd(al,al+1...ara_l,a_{l+1}...a_ral,al+1...ar)