18048976

Appears in sequences

• Sociable numbers: smallest member of each cycle (conjectured).at n=7A003416
• A 4-cycle of the k => sigma(k)-k process, where sigma(k) is the sum of divisors of k (A000203).at n=0A073032
• A 4-cycle of the k => sigma(k)-k process, where sigma(k) is the sum of divisors of k (A000203).at n=4A073032
• A 4-cycle of the k => sigma(k)-k process, where sigma(k) is the sum of divisors of k (A000203).at n=8A073032
• A 4-cycle of the k => sigma(k)-k process, where sigma(k) is the sum of divisors of k (A000203).at n=12A073032
• A 4-cycle of the k => sigma(k)-k process, where sigma(k) is the sum of divisors of k (A000203).at n=16A073032
• A 4-cycle of the k => sigma(k)-k process, where sigma(k) is the sum of divisors of k (A000203).at n=20A073032
• A 4-cycle of the k => sigma(k)-k process, where sigma(k) is the sum of divisors of k (A000203).at n=24A073032
• Smallest member of sociable quadruples.at n=5A090615
• Smallest member of sociable quadruples with signature: abundant, deficient, abundant, deficient.at n=0A222977