202444

Appears in sequences

• Larger of amicable pair.at n=21A002046
• Largest members of k-sociable cycles of order r.at n=29A183013
• 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=31A254879
• Amicable pairs.at n=43A259180
• Amicable pairs (x < y) ordered by nondecreasing sum (x + y) and then by increasing x.at n=43A259933
• Larger of amicable pair (x, y) as they are listed in A259933.at n=21A260087
• Amicable pairs of even numbers.at n=33A262622
• Even amicable numbers.at n=32A262624
• Twin amicable numbers (m,n) where there is not any part of another amicable pair between m and n.at n=21A273259
• (1+e)-sigma amicable numbers.at n=37A274116
• Amicable pairs with the property that both members have the same number of divisors.at n=19A328064
• 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=18A333930
• 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=23A383714
• 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=21A385186