609928

Appears in sequences

• Smaller of an amicable pair: (a,b) such that sigma(a) = sigma(b) = a+b, a < b.at n=31A002025
• Number of planar n X n X n binary triangular grids symmetric under 120 degree rotation with no more than 3 ones in any 5 X 5 X 5 subtriangle.at n=15A153926
• Smaller members of regular amicable pairs.at n=22A215491
• Smaller of amicable pair (x, y) as they are listed in A259933.at n=31A260086
• List of pairs of amicable numbers (m,n) where the sum of the pair is divisible by 10.at n=34A291422
• Lesser of tri-unitary amicable numbers pair: numbers (m, n) such that tsigma(m) = tsigma(n) = m + n, where tsigma(n) is the sum of the tri-unitary divisors of n (A324706).at n=29A324708
• Amicable pairs with the property that the number of divisors of the smaller member is greater than the number of divisors of the larger member.at n=34A328063
• Amicable pairs with the property that the number of divisors of the smaller member is twice the number of divisors of the larger member.at n=26A328065