1511930

Appears in sequences

• Smaller of unitary amicable pair.at n=27A002952
• Amicable pairs {x, y} such that y is the sum of the divisors of x that are not divided by every prime factor of x and vice versa.at n=12A307986
• Lesser of exponentially-odd amicable numbers pair: numbers m < k such that m = s(k) and k = s(m), where s(k) is the sum of proper exponential-odd divisors of k.at n=23A325847
• Amicable pairs with the property that the number of divisors of the smaller member is smaller than the number of divisors of the larger member.at n=2A328255
• Smaller member of a nonexponential amicable pair: numbers (k, m) such that nesigma(k) = m and nesigma(m) = k, where nesigma(k) is the sum of the nonexponential divisors of k (A160135).at n=5A348602