#include <bits/stdc++.h>

#define scanI(n) scanf("%d", &n)
#define scanL(n) scanf("%ld", &n)
#define scanLL(n) scan("%lld", &n)
#define scanII(a, b) scanf("%d %d", &a, &b)
#define scanIII(a, b, c) scanf("%d %d %d", &a, &b, &c);
#define printI(n) printf("%d", n)
#define printII(a,b) printf("%d %d", a, b)
#define PRINT(list) for(auto i : list) printf("%d ", i); printf("\n");
#define PRINTARR(ar_, n_) for(int i_=0; i_<n_; i_++){printf("%d ", ar_[i_]);} printf("\n");
#define DPRINT(dlist) for(auto list : dlist) { PRsINT(list); printf("\n"); }
#define INIT(ar, n, val) for(int _i=0; _i<n; _i++) ar[_i] = val;
#define ALL(x) x.begin(), x.end()
#define VI vector<int>
#define PR pair<int, int>
#define LL long long
#define MOD 1000000007
#define PI 3.142857
#define FORi(n) for(int i=0; i<n; i++)
#define FORie(n)  for(int i=1; i<=n; i++)
#define FORj(n) for(int j=0; j<n; j++)

using namespace std;

LL count(LL n){
    LL sum = n, i;
    while(n != 1){
        for(i=n/2; n%i!=0; i--){

        }
        sum += i;
        n = i;
    }
    return sum;
}

int main() {
    int n;
    cin >> n;

    vector <long long> a(n);
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
     LL sum = 0;
    for(auto i: a){
        sum += count(i);
    }
    printf("%lld\n", sum);
    return 0;
}