Random Sequences Based on the Divisor Pairs Function
  This paper investigates the randomness properties of a function of the divisor pairs of a natural number. This function, the antecedents of which go to very ancient times, has randomness properties that can find applications in cryptography, key distribution, and other problems of computer science. It is shown that the function is aperiodic and it has excellent autocorrelation properties. 
Subhash Kak
cs.CR cs.IT math.IT