1432640

Appears in sequences

• Products of pairs of amicable numbers (see A063990).at n=1A180163
• The product of the two numbers in an amicable pair, A002025(n) * A002046(n).at n=1A180202
• Numbers k such that A001065(x)*x = k has at least two solutions.at n=4A212327
• Record values obtained in the iterative process related to the abundancy function sigma(n)/n described in comments.at n=12A247141
• Triangle read by rows: T(n,k), n>=2, 1 <= k <= n-1, is the number of permutations in S_n in which there are k different values for the values mod n of the differences between adjacent elements when written in row notation.at n=53A294789