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A364582
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a(n) is the least number with exactly n divisors of the form 3*k+1.
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2
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1, 4, 16, 28, 80, 112, 320, 280, 784, 560, 1600, 1120, 10000, 2240, 3920, 2800, 25600, 5600, 1310720, 6160, 15680, 11200, 48400, 12320, 110000, 70000, 39200, 24640, 6553600, 30800, 5368709120, 36400, 78400, 179200, 440000, 61600, 343597383680, 1210000, 490000, 80080
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OFFSET
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1,2
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LINKS
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PROG
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(PARI) a(n) = my(k=1); while (sumdiv(k, d, (d%3)==1) != n, k++); k; \\ Michel Marcus, Jul 29 2023
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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