منابع مشابه
On the Divisor Products and Proper Divisor Products Sequences*
Let n be a positive integer, Pd(n) denotes the product of all positive divisors of n, qd(n) denotes the product of all proper divisors of n. In this paper, we study the properties of the sequences {PdCn)} and {qd(n)}, and prove that the Makowski &. Schinzel conjecture hold for the sequences {pd(n)} and {qd(n)}.
متن کاملPrimes in Divisibility Sequences
We give an overview of two important families of divisibility sequences: the Lehmer–Pierce family (which generalise the Mersenne sequence) and the elliptic divisibility sequences. Recent computational work is described, as well as some of the mathematics behind these sequences.
متن کاملOn Divisibility Properties of Sequences of Integers
Let a 1 < a, < . . . be an infinite sequence of integers of positive lower logarithmic density, in other words 1 (1) lim sup > 0. X=+logxa;<x a i DAVENPORT and ERDŐS [1] proved that then there exists an infinite subsequence a,,, < a„, ` . . . satisfying a,, ./a,, .+, . In this note we will give various sharpenings of this result . The sequence a1 < a2 < . . . will be denoted by A, an infinite s...
متن کاملOn a divisibility relation for Lucas sequences
Article history: Received 9 October 2015 Received in revised form 24 November 2015 Accepted 26 November 2015 Available online 8 January 2016 Communicated by Steven J. Miller MSC: 11B39
متن کاملStrong divisibility and lcm-sequences
Let R be an integral domain in which every two nonzero elements have a greatest common divisor. Let (an)n>1 be a sequence of nonzero elements in R. We prove that gcd(an, am) = agcd(n,m) for all n,m > 1 if and only if an = ∏
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ژورنال
عنوان ژورنال: Acta Arithmetica
سال: 2017
ISSN: 0065-1036,1730-6264
DOI: 10.4064/aa8381-11-2016