#include<stdio.h>
#include<string.h>

#define NMAX 507

int n, a[NMAX], D[2][NMAX * 2][150], h[10];

inline int cmmdc(int a, int b){
    if(!b)
        return a;
    return cmmdc(b, a % b);
}

void Adun(int a[], int b[]){
    if(a[0] < b[0])
        a[0] = b[0];
    int t = 0;
    for(int i = 1; i <= a[0]; ++ i){
        a[i] += t + b[i];
        t = a[i] / 10;
        a[i] %= 10;
    }
    while(t != 0){
        a[++ a[0]] = t % 10;
        t /= 10;
    }
}

int main(){
    freopen("indep.in", "r", stdin);
    freopen("indep.out", "w", stdout);
    scanf("%d", &n);
    for(int i = 1; i <= n; ++ i)
        scanf("%d", &a[i]);
    h[0] = h[1] = 1;
    for(int i = 1; i <= n; ++ i){
        Adun(D[1][a[i]], h);
        for(int j = 1; j <= 1000; ++ j){
            Adun(D[1][j], D[0][j]);
            Adun(D[1][cmmdc(j, a[i])], D[0][j]);
            ///D[i + 1][j] += D[i][j];
            ///D[i + 1][cmmdc(j, a[i])] += D[i][j];
        }
        memcpy(D[0], D[1], sizeof(D[0]));
        memset(D[1], 0, sizeof(D[1]));
    }
    for(int i = D[0][1][0]; i >= 1; -- i)
        printf("%d", D[0][1][i]);
    return 0;
}