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Jo loves countingTime Limit: 12000/6000 MS (Java/Others) Memory Limit: 524288/262144 K (Java/Others)Total Submission(s): 352 Accepted Submission(s): 145 Problem Description Jo loves his teammate Ky's rick and roll! But he more than loves counting. Jo thinks, for two numbers $n$ and $d$ ( $d$ is a factor of $n$ ), $d \in Good_n$ if and only if the prime factor set of $d$ $\textbf{equals}$ to that of $n$. That is, $Good_n=\lbrace d\mid n\bmod d=0\wedge \forall p\in Prime\to (d\bmod p=0\leftrightarrow n\bmod p=0)\rbrace $. For example, $Good_{12}=\lbrace 6, 12\rbrace $ , since the factors of $12$ are $\lbrace 1, 2, 3, 4, 6, 12\rbrace $. $\lbrace 2, 3\rbrace $ are prime factors of $12$, so all its factors of their good factors must contain prime factors $2, 3$. Therefore, only $6, 12$ satisfy the condition. For a number $n$, Jo will select a factor $d$ randomly from $Good_n$ with equal possibility. if $d=n$, then the rich Jo will pay you $n$ yuan as reward. Otherwise, you will gain nothing. Ky, the man who treats money as dirt, wants to choose an integer from $[1, M]$ randomly for Jo's game. Help Ky calculate the expectation of money he can get. Input The first line contains an integer $T(T≤12)$ . Then $T$ test cases follow. For each test case, there is only one integer $M(1\leq M\leq 10^{12})$. It's guaranteed that there are at most $6$ cases such that $M>10^6$ . Output For each test case, output one integer in a single line --- the expectation of the money Ky can get. Since it can be too large, print it modulo $4179340454199820289(=29\cdot 2^{57}+1)$. Sample Input
Sample Output
Hint $Good_1=\lbrace1\rbrace $ $Good_2=\lbrace2\rbrace $ $Good_3=\lbrace3\rbrace $ $Good_4=\lbrace2, 4\rbrace $ Therefore, the answer is $\displaystyle {1\over 4}({1\over |Good_1|}+{2\over |Good_2|}+{3\over |Good_3|}+{4\over |Good_4|})={1\over 4}({1\over 1}+{2\over 1}+{3\over 1}+{4\over 2})=2$ Source | ||||||||||
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