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

Author

Omar E. Pol, Oct 09 2019

Keywords

• nonn

Comments

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

Examples

			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.
		

Links

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

Crossrefs

Subsequence of A259180.

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

Extensions

More terms from Amiram Eldar, Oct 09 2019