124155

Appears in sequences

• Larger of amicable pair.at n=13A002046
• Digitally balanced numbers in base 7: equal numbers of 0's, 1's, ..., 6's.at n=11A049358
• Amicable numbers.at n=30A063990
• a(n) = sum of cubes of the coefficients of x^n in x^(n-3k)*A(x^3)^(n-3k+1), as k varies from 0 to floor(n/3) for n>0, with a(0)=1.at n=13A121643
• Largest members of k-sociable cycles of order r.at n=23A183013
• Numbers k such that sigma(k) = sigma(sigma(k)-k).at n=34A206708
• Deficient numbers whose aliquot sequence is deficient, abundant, deficient, ..., etc.at n=29A234970
• 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=24A254879
• Amicable pairs.at n=27A259180
• Amicable pairs (x < y) ordered by nondecreasing sum (x + y) and then by increasing x.at n=27A259933
• Larger of amicable pair (x, y) as they are listed in A259933.at n=13A260087
• Amicable pairs of odd numbers.at n=7A262623
• Odd amicable numbers.at n=8A262625
• (1+e)-sigma amicable numbers.at n=28A274116
• List of pairs of amicable numbers (m,n) where the sum of the pair is divisible by 10.at n=13A291422
• 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=15A328063
• 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=13A328065
• 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=13A333930
• 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=17A383714
• 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=31A385008