∑⌊ni⌋\sum\lfloor{\dfrac{n}{i}}\rfloor∑⌊in⌋用数论分块可求，请问∑⌊in⌋(n<=i<=m)\sum\lfloor{\dfrac{i}{n}}\rfloor(n<=i<=m)∑⌊ni⌋(n<=i<=m)可用整除分块求吗，怎么求？
