1669910

Appears in sequences

• 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=14A307986
• 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=24A325847
• Lesser of amicable pair a < b such that the ratio of their number of divisors d(a)/d(b) sets a new record.at n=2A339680
• 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=6A348602