The Divisibility of Divisor Functions
1961 ◽
Vol 5
(1)
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pp. 35-40
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For any positive integers n and v letwhere d runs through all the positive divisors of n. For each positive integer k and real x > 1, denote by N(v, k; x) the number of positive integers n ≦ x for which σv(n) is not divisible by k. Then Watson [6] has shown that, when v is odd,as x → ∞; it is assumed here and throughout that v and k are fixed and independent of x. It follows, in particular, that σ (n) is almost always divisible by k. A brief account of the ideas used by Watson will be found in § 10.6 of Hardy's book on Ramanujan [2].
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2010 ◽
Vol 81
(2)
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pp. 177-185
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Keyword(s):
2018 ◽
Vol 107
(02)
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pp. 272-288
2013 ◽
Vol 94
(1)
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pp. 50-105
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1970 ◽
Vol 13
(2)
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pp. 255-259
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2019 ◽
Vol 100
(2)
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pp. 189-193
1978 ◽
Vol 83
(1)
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pp. 65-71
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1993 ◽
Vol 35
(2)
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pp. 219-224
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1951 ◽
Vol 47
(4)
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pp. 679-686
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2011 ◽
Vol 54
(2)
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pp. 431-441
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