88730

Appears in sequences

• Larger of amicable pair.at n=12A002046
• Amicable numbers.at n=25A063990
• Larger member of an infinitary amicable pair.at n=19A126170
• Infinitary amicable numbers.at n=38A127664
• Largest members of k-sociable cycles of order r.at n=21A183013
• Numbers k such that sigma(k) = sigma(sigma(k)-k).at n=29A206708
• Deficient numbers whose aliquot sequence is deficient, abundant, deficient, ..., etc.at n=23A234970
• 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=22A254879
• 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=17A258134
• Amicable pairs.at n=25A259180
• Amicable pairs (x < y) ordered by nondecreasing sum (x + y) and then by increasing x.at n=25A259933
• Larger of amicable pair (x, y) as they are listed in A259933.at n=12A260087
• Amicable pairs of even numbers.at n=19A262622
• Even amicable numbers.at n=19A262624
• List of pairs of amicable numbers (m,n) where the sum of the pair is divisible by 10.at n=11A291422
• Larger of bi-unitary amicable pair.at n=21A292981
• Larger of tri-unitary amicable numbers pair: numbers (m, n) such that tsigma(m) = tsigma(n) = m + n, where tsigma(n) is the sum of the tri-unitary divisors of n (A324706).at n=15A324709
• Amicable pairs with the property that the number of divisors of the smaller member is greater than the number of divisors of the larger member.at n=13A328063
• Amicable pairs with the property that the number of divisors of the smaller member is twice the number of divisors of the larger member.at n=11A328065
• Integers k such that there exists an integer 0<m<k such that m*sigma(m)^2 + k*sigma(k)^2 = (m+k)^3.at n=15A383714