220093440

Appears in sequences

• Numbers k for which sigma(k)/k - 6/7 is an integer.at n=5A218413
• Numbers k for which k * gcd(sigma(k), A003961(k)) is equal to sigma(k) * gcd(k, A003961(k)), where A003961 shifts the prime factorization one step towards larger primes, and sigma is the sum of divisors function.at n=21A349745