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Description

Input
Output
Sample Input
Sample Output
#include <stdio.h>
#include <string.h>
const int maxn=500000;
int a[maxn+5];
int main()
{
int t,n;
for(int i=1; i<=maxn; i++)
a[i]=1;
for(int i=2; i<=maxn/2; i++)
{
for(int j=2; j*i<=maxn; j++)
a[j*i]+=i;
}
scanf("%d",&t);
while(t--)
{
scanf("%d",&n);
printf("%d\n",a[n]);
}
return 0;
}
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原文地址:http://www.cnblogs.com/cxbky/p/4907496.html