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不可摸数

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 25232    Accepted Submission(s): 6405


Problem Description
s(n)是正整数n的真因子之和，即小于n且整除n的因子和.例如s(12)=1+2+3+4+6=16.如果任何
数m，s(m)都不等于n,则称n为不可摸数.
 

Input
包含多组数据，首先输入T,表示有T组数据.每组数据1行给出n(2<=n<=1000)是整数。
 

Output
如果n是不可摸数，输出yes，否则输出no
 

Sample Input
3
2
5
8
 

Sample Output
yes
yes
no
 

Author
Zhousc@ECJTU
 

Source
ECJTU 2008 Spring Contest
 

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