A328255 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.

469028, 486178, 1511930, 1598470, 4246130, 4488910, 5232010, 5799542, 10533296, 10949704, 11693290, 12361622, 20308995, 20955645, 37784810, 39944086, 46991890, 48471470, 48641584, 48852176, 80422335, 82977345, 96304845, 96747315, 103034776, 105016424, 115749344, 116983744, 118458830, 131819506

Offset

1,1

Comments

Amicable pairs(x,y) such that d(x) < d(y), where d(n) is the number of divisors of n.

Links

Amiram Eldar, Table of n, a(n) for n = 1..20000

Example

Consider the amicable pair [469028, 486178]. The smaller member has 18 divisors and the larger member has 36 divisors. 18 is smaller than 36, so the amicable pair [469028, 486178] is in the sequence.

Crossrefs

Subsequence of A259180.

Cf. A000005, A002025, A002046, A328009, A328043, A328063, A328064, A328065.

Sequence in context: A096889 A206205 A227767 * A092010 A206541 A346110

Adjacent sequences: A328252 A328253 A328254 * A328256 A328257 A328258

Keyword

nonn

Author

Omar E. Pol, Oct 09 2019

Extensions

More terms from Amiram Eldar, Oct 09 2019

Status

approved