180848

Appears in sequences

• Larger of amicable pair.at n=19A002046
• a(n+1) = a(n) converted to base 7 from base 6 (written in base 10).at n=32A023384
• Irregular triangle in which row n consists of the larger of pairs of amicable numbers of the form 2^n pq, with p and q odd primes.at n=5A180651
• Largest members of k-sociable cycles of order r.at n=28A183013
• 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=29A254879
• Amicable pairs.at n=39A259180
• Amicable pairs (x < y) ordered by nondecreasing sum (x + y) and then by increasing x.at n=39A259933
• Larger of amicable pair (x, y) as they are listed in A259933.at n=19A260087
• Amicable pairs of even numbers.at n=29A262622
• Even amicable numbers.at n=29A262624
• List of pairs of amicable numbers (m,n) where the sum of the pair is divisible by 10.at n=23A291422
• Amicable pairs with the property that both members have the same number of divisors.at n=17A328064
• 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=22A383714
• 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=38A385008
• Numbers y such that there exists an integer 0 < x < y such that sigma(x)^x * sigma(y)^y = (x+y)^(x+y).at n=19A385186