local mfl, mce = math.floor, math.ceil
local mmi, mma = math.min, math.max
local bls, brs = bit.lshift, bit.rshift
local ffi = require("ffi")
local C = ffi.C

local function getgcd(x, y)
  if x == 0LL then return y end
  if y == 0LL then return x end
  while 0LL < x do
    x, y = y % x, x
  end
  return y
end
local function lltonumber(str)
  if #str < 10 then
    return 1LL * tonumber(str)
  else
    local v1 = str:sub(#str - 8, #str)
    local v2 = str:sub(1, #str - 9)
    return 1000000000LL * tonumber(v2) + tonumber(v1)
  end
end

local SegTree = {}
SegTree.updateAll = function(self)
  for i = self.stagenum - 1, 1, -1 do
    local cnt = bls(1, i - 1)
    for j = 1, cnt do
      self.stage[i][j] = self.func(self.stage[i + 1][j * 2 - 1], self.stage[i + 1][j * 2])
    end
  end
end
SegTree.create = function(self, n, func, emptyvalue)
  self.func, self.emptyvalue = func, emptyvalue
  local stagenum, mul = 1, 1
  self.stage = {}
  self.stage[1] = ffi.new("int64_t[?]", 2)
  while mul < n do
    mul, stagenum = mul * 2, stagenum + 1
    self.stage[stagenum] = ffi.new("int64_t[?]", mul + 1)
  end
  self.stagenum = stagenum
  -- for i = 1, mul do self.stage[stagenum][i] = emptyvalue end
end
SegTree.setSilent = function(self, idx, value)
  self.stage[self.stagenum][idx] = value
end
SegTree.right_bound = function(self, left, right)
  local ret, retpos = self.emptyvalue, left - 1
  local stage, l, r = 1, left, right
  local stagenum = self.stagenum
  while true do
    local sz = bls(1, stagenum - stage)
    while (l - 1) % sz ~= 0 or r + 1 - l < sz do
      stage = stage + 1
      sz = bls(1, stagenum - stage)
    end
    local tmp = self.func(ret, self.stage[stage][mce(l / sz)])
    if 1LL < tmp then
      ret, retpos = tmp, l + sz - 1
      if retpos == right then break end
      if l + sz <= r then stage, l, r = 1, l + sz, r
      else break end
    else
      if sz ~= 1 then stage, l, r = stage + 1, l, l + sz - 2
      else break end
    end
  end
  return retpos + 1
end
SegTree.new = function(n, func, emptyvalue)
  local obj = {}
  setmetatable(obj, {__index = SegTree})
  obj:create(n, func, emptyvalue)
  return obj
end


local n = io.read("*n", "*l")
local st = SegTree.new(n, getgcd, 0LL)
ffi.cdef[[
long long atoll(const char*);
]]

local s = io.read()
do
  local i = 1
  for w in s:gmatch("%d+") do
    st.stage[st.stagenum][i] = C.atoll(w)
    i = i + 1
  end
end

st:updateAll()
local ret = 0
local z = n
for i = n, 1, -1 do
  local p = st:right_bound(i, z)
  ret = ret + n + 1 - p
  z = mmi(p, n)
end
print(ret)