101524: [AtCoder]ABC152 E - Flatten

Problem Statement

Given are $N$ positive integers $A_1,...,A_N$.

Consider positive integers $B_1, ..., B_N$ that satisfy the following condition.

Condition: For any $i, j$ such that $1 \leq i < j \leq N$, $A_i B_i = A_j B_j$ holds.

Find the minimum possible value of $B_1 + ... + B_N$ for such $B_1,...,B_N$.

Since the answer can be enormous, print the sum modulo ($10^9 +7$).

Constraints

• $1 \leq N \leq 10^4$
• $1 \leq A_i \leq 10^6$
• All values in input are integers.

Input

Input is given from Standard Input in the following format:

$N$
$A_1$ $...$ $A_N$

Output

Print the minimum possible value of $B_1 + ... + B_N$ for $B_1,...,B_N$ that satisfy the condition, modulo ($10^9 +7$).

Sample Input 1

3
2 3 4

Sample Output 1

13

Let $B_1=6$, $B_2=4$, and $B_3=3$, and the condition will be satisfied.

Sample Input 2

5
12 12 12 12 12

Sample Output 2

5

We can let all $B_i$ be $1$.

Sample Input 3

3
1000000 999999 999998

Sample Output 3

996989508

Print the sum modulo $(10^9+7)$.