20100368

Appears in sequences

• A 4-cycle of the k => sigma(k)-k process, where sigma(k) is the sum of divisors of k (A000203).at n=1A073032
• A 4-cycle of the k => sigma(k)-k process, where sigma(k) is the sum of divisors of k (A000203).at n=5A073032
• A 4-cycle of the k => sigma(k)-k process, where sigma(k) is the sum of divisors of k (A000203).at n=9A073032
• A 4-cycle of the k => sigma(k)-k process, where sigma(k) is the sum of divisors of k (A000203).at n=13A073032
• A 4-cycle of the k => sigma(k)-k process, where sigma(k) is the sum of divisors of k (A000203).at n=17A073032
• A 4-cycle of the k => sigma(k)-k process, where sigma(k) is the sum of divisors of k (A000203).at n=21A073032