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A337346
Number of proper divisors d of n for which A003961(d) > 2*d.
6
0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 2, 0, 0, 0, 2, 0, 2, 0, 2, 0, 0, 0, 4, 0, 0, 1, 2, 0, 3, 0, 3, 0, 0, 0, 5, 0, 0, 0, 4, 0, 3, 0, 1, 2, 0, 0, 6, 0, 1, 0, 1, 0, 4, 0, 4, 0, 0, 0, 7, 0, 0, 2, 4, 0, 1, 0, 1, 0, 3, 0, 8, 0, 0, 1, 1, 0, 2, 0, 6, 2, 0, 0, 7, 0, 0, 0, 3, 0, 7, 0, 1, 0, 0, 0, 8, 0, 2, 1, 4, 0, 1, 0, 3, 3
OFFSET
1,12
COMMENTS
Number of terms of A246282 less than n that divide n.
Number of proper divisors d of n for which A048673(d) > d.
FORMULA
a(n) = Sum_{d|n, d<n} A252742(d).
a(n) = A337345(n) - A252742(n).
PROG
(PARI)
A003961(n) = { my(f = factor(n)); for (i=1, #f~, f[i, 1] = nextprime(f[i, 1]+1)); factorback(f); };
A337346(n) = sumdiv(n, d, (d<n)&&(A003961(d)>(d+d)));
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Aug 27 2020
STATUS
approved