A note on twin practical numbers
Abstract
A positive integer m is a practical number if every positive integer n < m is a sum of distinct divisors of m. Let P_2 (x) be the counting function of the pairs (m, m + 2) of twin practical numbers. Margenstern gave a conjecture on P_2 (x). We prove a new result.The authors retain all rights to the original work without any restrictions.
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