39944086

Appears in sequences

• 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=15A328255
• Larger of amicable pair a < b such that the ratio of their number of divisors d(b)/d(a) sets a new record.at n=4A339683
• Larger 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=28A348603