76084

Appears in sequences

• Larger of amicable pair.at n=8A002046
• Greater of amicable pair of Euler's first form with GCD a prime times a power of 2.at n=0A049026
• Amicable numbers.at n=22A063990
• Largest members of k-sociable cycles of order r.at n=19A183013
• Conjectured list of multisociable numbers.at n=35A183019
• Numbers k such that sigma(k) = sigma(sigma(k)-k).at n=26A206708
• Deficient numbers whose aliquot sequence is deficient, abundant, deficient, ..., etc.at n=19A234970
• 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=20A254879
• Amicable pairs.at n=17A259180
• Amicable pairs (x < y) ordered by nondecreasing sum (x + y) and then by increasing x.at n=21A259933
• Larger of amicable pair (x, y) as they are listed in A259933.at n=10A260087
• Amicable pairs of even numbers.at n=15A262622
• Even amicable numbers.at n=17A262624
• (1+e)-sigma amicable numbers.at n=24A274116
• 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=9A328063
• 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=7A328065
• Larger of recursive amicable numbers pair: numbers m < k such that m = s(k) and k = s(m), where s(k) = A333926(k) - k is the sum of proper recursive divisors of k.at n=10A333930
• Conjectured list of numbers which are perfect, amicable, or sociable.at n=41A347770
• 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=13A383714
• Integers k such that there exists an integer 0<m<k such that sigma(m)^2 + sigma(k)^2 = 2*(m+k)^2.at n=22A385008