fun List<Int>.lowerBound(target: Int): Int {
    var min = 0
    var max = size
    while (min < max) {
        val mid = (min + max) / 2
        if (this[mid] < target) {
            min = mid + 1
        }else {
            max = mid
        }
    }
    return max
}
const val MAX_VALUE = 200000
fun main() {
    val n = readLine()!!.trim().toInt()
    val num = readLine()!!.trim().split(' ').map(String::toInt).sorted()
    val count = IntArray(MAX_VALUE + 1)
    for (a in num) {
        ++count[a]
    }
    var result = num.fold(0L){acc, v -> acc + v} * n
    for (i in 1 until MAX_VALUE) {
        val m = i.toLong() * count[i]
        for (j in 1 .. MAX_VALUE / i) {
            result -= m * (n - num.lowerBound(i * j))
        }
    }
    println(result)
}