2017ACM暑期多校联合训练 - Team 4 1003 HDU 6069 Counting Divisors (区间素数筛选+因子数)...
题目链接ProblemDescriptionInmathematics,thefunctiond(n)denotesthenumberofdivisorsofpositiveintegern.Forexample,d(12)=6because1,2,3,4,6,12areall12'sdivisors.Inthisproblem,givenl,randk,yourtaskistocalculate