$d(n) = 8$

Number Theory

How many positive integers have exactly 8 divisors?

1 \leq x < 10^{9}

, where

x

is the answer

10^{9} \leq x < 10^{18}

, where

x

is the answer A finite number larger than

10^{18}

An infinite amount

d ( n ) = 8 d(n) = 8 d(n)=8