(For other notation see Notation for the Special Functions.)
positive integers (unless otherwise indicated). |
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divides . |
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greatest common divisor of . If , and are called relatively prime, or coprime. |
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greatest common divisor of . |
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, |
sum, product taken over divisors of . |
sum taken over , and relatively prime to . |
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prime numbers (or primes): integers () with only two positive integer divisors, and the number itself. |
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, |
sum, product extended over all primes. |
real numbers. |
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. |
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Riemann zeta function; see §25.2(i). |
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Jacobi symbol; see §27.9. |
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Legendre symbol; see §27.9. |