process.stdin.resume();
process.stdin.setEncoding('ascii');

var input_stdin = "";
var input_stdin_array = "";
var input_currentline = 0;

process.stdin.on('data', function (data) {
    input_stdin += data;
});

process.stdin.on('end', function () {
    input_stdin_array = input_stdin.split("\n");
    main();    
});

function readLine() {
    return input_stdin_array[input_currentline++];
}

/////////////// ignore above this line ////////////////////

const getDelimeters = (n) => {
    let result = [];
    while (n !== 1) {
        for (let i = 2; i <= n; i++) {
            if (n % i === 0) {
                result.push(i);
                n = n / i;
                break;
            }
        }
    }
    return result.sort((a, b) => a < b);
}

function longestSequence(a) {
    let result = 0;
    for (let i = 0; i < a.length; i++) {
        const delimeters = getDelimeters(a[i]);
        let lastN = 1;
        result+=lastN;
        for (let j = 0; j < delimeters.length; j++) {
            lastN = delimeters[j] * lastN;
            result += lastN;
        }
    }
    
    return result;
}

function main() {
    var n = parseInt(readLine());
    a = readLine().split(' ');
    a = a.map(Number);
    var result = longestSequence(a);
    process.stdout.write("" + result + "\n");

}