168730

Appears in sequences

• Larger of amicable pair.at n=17A002046
• Larger of unitary amicable pair.at n=7A002953
• Unitary amicable numbers.at n=15A063991
• Call (m,n) a "(-1)SSU amicable pair" if (-1)Sigma(m)*Sigma(m) = k*UnitaryPhi(m)*(m+n) and (-1)Sigma(n)*Sigma(n) = k*UnitaryPhi(n)*(m+n) for some integer k. Sequence gives values of m, assuming n <= m.at n=10A123728
• Larger member of an infinitary amicable pair.at n=24A126170
• Largest members of k-sociable cycles of order r.at n=26A183013
• Deficient numbers whose aliquot sequence is deficient, abundant, deficient, ..., etc.at n=34A234970
• Let us denote 's' the sum of the deficient numbers in the aliquot parts of x. Sequence lists numbers x such that sigma(s)-s is equal to x.at n=27A254879
• Let s denote the sum of the deficient numbers in the aliquot parts of x. Sequence lists numbers x such that sigma(s) = usigma(x), where usigma(x) is the sum of the unitary divisors of x (A034448).at n=22A258134
• Amicable pairs.at n=35A259180
• Amicable pairs (x < y) ordered by nondecreasing sum (x + y) and then by increasing x.at n=35A259933
• Larger of amicable pair (x, y) as they are listed in A259933.at n=17A260087
• Amicable pairs of even numbers.at n=25A262622
• Even amicable numbers.at n=25A262624
• (1+e)-sigma amicable numbers.at n=32A274116
• List of pairs of amicable numbers (m,n) where the sum of the pair is divisible by 10.at n=21A291422
• Larger of bi-unitary amicable pair.at n=25A292981
• Amicable pairs {x, y} such that y is the sum of the divisors of x that are not divided by every prime factor of x and vice versa.at n=7A307986
• Larger of semi-unitary amicable numbers pair: numbers (m, n) such that susigma(m) = susigma(n) = m + n, where susigma(n) is the sum of the semi-unitary divisors of n (A322485).at n=17A322542
• Larger of modified exponential amicable pairs.at n=14A323759