175175

Appears in sequences

• a(n) is the smallest positive integer that is coprime to n and has n divisors.at n=35A136641
• Denominator of Laguerre(n, -6).at n=14A160608
• Denominator of Laguerre(n, 12).at n=14A160672
• Triangle read by rows, the coefficients of J. L. Fields generalized Bernoulli polynomials.at n=27A220412
• Reversing the exponents order in the prime factorization of n a different number with the same digits of n is obtained.at n=0A224253
• Triangle read by rows: T(n,k) (0 <= k <= n) gives numerators of coefficients in Nörlund's polynomials D_{2n}(x).at n=27A260327
• Arithmetic derivative of the prime-factorization representation of the n-th Stern polynomial: a(n) = A003415(A260443(n)).at n=38A278544
• Highly composite 5-rough numbers: numbers that are divisible by neither 2 nor 3 whose number of divisors reaches a record.at n=12A343734
• Smallest m such that the m-th Lucas number has exactly n divisors that are also Lucas numbers.at n=35A356666
• Numbers k with the property that the set of decimal digits of k matches the set of first digits of the prime factors of k.at n=8A359491
• a(n) is the smallest number with exactly n divisors that are greater than or equal to 4.at n=34A359955