tailrec fun gcd(a: Long, b: Long): Long {
    return when(b){
        0L -> a
        else -> gcd(b, a % b)
    }
}
fun Int.floorLog2(): Int {
    var rest = this
    var result = 0
    for (d in 4 downTo 0) {
        if (rest >= (1 shl (1 shl d))) {
            rest = rest shr (1 shl d)
            result += 1 shl d
        }
    }
    return result
}
fun main() {
    val n = readLine()!!.trim().toInt()
    val num = readLine()!!.trim().split(' ').map(String::toLong)
    val table = mutableListOf(num)
    while ((1 shl table.size) <= n) {
        val len = 1 shl table.size
        val dest = mutableListOf<Long>()
        for (i in 0 .. n - len) {
            dest.add(gcd(table.last()[i], table.last()[i + len / 2]))
        }
        table.add(dest)
    }
    fun readTable(from: Int, until: Int): Long {
        val len = until - from
        if (len == 0) return 0L
        val log2 = len.floorLog2()
        return gcd(table[log2][from], table[log2][from + len - (1 shl log2)])
    }
    var j = 0
    var result = 0L
    for (i in 0 until n) {
        var d = readTable(i, j)
        while (j in num.indices && d != 1L) {
            d = gcd(d, num[j])
            j += 1
        }
        if (d == 1L) {
            result += n - j + 1
        }
    }
    println(result)
}