What is the smallest positive integer that has exactly 40 divisors? Thank you for help.
+26367 What is the smallest positive integer that has exactly 40 divisors?
\(\sigma_0(1680) = 40\)
See http://oeis.org/search?q=sigma_0&sort=&language=german&go=Suche
See table of n, a(n) for n = 1..100000: http://oeis.org/A000005/b000005.txt
The smallest positive integer that has exactly 40 divisors is 1680
