From f2839a41207dfe6dbffa8717903e44101eb7b887 Mon Sep 17 00:00:00 2001
From: ljcjames <ljcjames@qq.com>
Date: Fri, 19 Aug 2022 08:25:19 +0800
Subject: [PATCH] =?UTF-8?q?8.19=E6=97=A9=E4=B8=8A?=
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 8.16/M-PairsFormingLCM/Readme.md | 10 ++++++----
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diff --git a/8.16/M-PairsFormingLCM/Readme.md b/8.16/M-PairsFormingLCM/Readme.md
index cc02b16..e973798 100644
--- a/8.16/M-PairsFormingLCM/Readme.md
+++ b/8.16/M-PairsFormingLCM/Readme.md
@@ -1,9 +1,11 @@
-# 题目
-* 链接
+# M - Pairs Forming LCM
+* https://vjudge.net/contest/509210#problem/M
 ### 题意
-
+给n,lcm(i, j) = n and (i ≤ j).
 ### 做法
-
+质因数分解n=p1^k1*p2^k2
+ans*=(2k[i]+1);(i=0~k,j=0~k,去掉重复的k,k)
+ans=ans/2+1;(i<=j,补上k,k)
 ### 关键词
 
 ### 易错点