import kotlin.math.min

fun main(args:Array<String>){
    val k = readLine()!!.toInt()
    var result = 0
    for(a in 1..k){
        for(b in 1..k){
            for(c in 1..k){
                val m = min(a,min(b,c))
                var sum = 0
                var start = 1
                if(a%2==0&&b%2==0&&c%2==0){
                    start *= 2
                }
                if(a%3==0&&b%3==0&&c%3==0){
                    start *= 3
                }
                if(a%5==0&&b%5==0&&c%5==0){
                    start *= 5
                }
                if(a%7==0&&b%7==0&&c%7==0){
                    start *= 7
                }
                for(i in start..m step start){
                    if(a%i==0&&b%i==0&&c%i==0){
                        sum =i
                    }
                }
                result += sum
            }
        }
    }
    println(result)
}