82004

Appears in sequences

• Numbers k such that both k and k+1 are abundant.at n=21A096399
• Numbers k such that both sigma(k) >= 2*k-1 and sigma(k+1) >= 2*(k+1)-1.at n=23A103289
• Numbers n such that n and n+1 are primitive abundant.at n=0A283418
• Numbers k such that k and k+1 have at least 4 but not both exactly 4 distinct prime factors.at n=15A321494
• Numbers k such that both k and k+1 are Zumkeller numbers (A083207).at n=19A328327
• Numbers k such that k and k+1 are both primitive abundant numbers (A071395).at n=0A330872
• Numbers k such that both k and k+1 are recursive abundant numbers (A333928).at n=1A333951
• Numbers k such that k and k+1 are both primitive Zumkeller numbers (A180332).at n=0A361934
• Numbers k such that k and k+1 are both S-abundant numbers (A181487).at n=6A364861
• Numbers k such that k and k+1 both have an odd number of abundant divisors.at n=7A381548