search

Marcythm-Archive / gitalk

1 stars 0 forks source link

「Project Euler 530」GCD of Divisors | Trisolaris's Blog #78

Open Marcythm opened 5 years ago

Marcythm commented 5 years ago

https://blog.trisolaris.top/pe530/

Problem Description 定义 f(n) ： f(n)=\sum{d | n}\left(d,\frac{n}{d}\right) 定义 F(n) ： F(n)=\sum{i=1}^{n}f(