Problem:
Score : 400 points

Problem Statement

You are given positive integers N and M.

How many sequences a of length N consisting of positive integers satisfy a_1 \times a_2 \times ... \times a_N = M? Find the count modulo 10^9+7.

Here, two sequences a' and a'' are considered different when there exists some i such that a_i' \neq a_i''.

Constraints

All values in input are integers.

1 \leq N \leq 10^5

1 \leq M \leq 10^9

Input

Input is given from Standard Input in the following format:

N M

Output

Print the number of the sequences consisting of positive integers that satisfy the condition, modulo 10^9 + 7.

Sample Input 1

2 6

Sample Output 1

4

Four sequences satisfy the condition: \{a_1, a_2\} = \{1, 6\}, \{2, 3\}, \{3, 2\} and \{6, 1\}.

Sample Input 2

3 12

Sample Output 2

18

Sample Input 3

100000 1000000000

Sample Output 3

957870001

Solution in PHP7 (7.0.15) (judge verdict: Wrong Answer)

<?php
define("MOD", 10**9+7);
fscanf(STDIN, "%d%d", $N, $M);
 
for($j = 2; $j <= sqrt($M)+1; $j++){
    if($M%$j == 0){
        @$map[$j]++;
        $M/=$j;
        $j--;
    }
}
@$map[$M]++;
$product = 1;
foreach($map as $prime => $count){
    $product *= nCm($count + $N - 1, $count);
    $product %= MOD;
}
echo $product;
 
//足し算
function addm($a, $b){
    return ($a + $b) % MOD;
}
//引き算
function subm($a, $b){
    return ($a + MOD - $b) % MOD;
}
//掛け算
function mulm($a, $b){
    return ($a * $b) % MOD;
}
//割り算
function divm($a, $b){
    static $memo;
    if(!isset($memo[$a][$b])){
        $memo[$a][$b] = mulm($a, powerm($b, MOD - 2));
    }
    return $memo[$a][$b];
}
//累乗
function powerm($a, $b){
    if($b == 0)return 1;
    if($b & 1)return (powerm($a, $b>>1)**2 % MOD) * $a % MOD;
    return powerm($a, $b>>1)**2 % MOD;
}
//階乗
function factorialm($a){
    if($a == 0)return 1;
    if(!isset($memo[$a])){
        $memo[$a] = factorialm($a - 1) * $a % MOD;
    }
    return $memo[$a];
}
//順列
function nPm($n, $m){
    static $memo;
    if($m == 0)return 1;
    if(!isset($memo[$n][$m])){
        $memo[$n][$m] = nPm($n, $m - 1) * ($n - $m + 1) % MOD;
    }
    return $memo[$n][$m];
}
//組み合わせ
function nCm($n, $m){
    static $memo;
    if(!isset($memo[$n][$m])){
        $m = min($m, $n-$m);
        $memo[$n][$m] = divm(nPm($n, $m), factorialm($m));
    }
    return $memo[$n][$m];
}