local read, write = io.read, io.write
local num, nl = '*n', '\n'
local a = read(num)
local x = a
local i = 0
local j = 0
local ans = 0
while i<=x/2 do
while j <= i do
write(j)
if i % j == 0 then
ans=ans+i
end
j = j + 1
end
i = i + 1
end
write(ans, nl)
if ans == x then
write(ans, nl)
end
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