number of divisors - Maple Help

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numtheory[tau] - number of divisors

Calling Sequence

tau(n)

sigma[0] (n)

Parameters

n

-

integer

Description

• 

The function tau(n) will compute the number of positive divisors of n.

• 

The command with(numtheory,tau) allows the use of the abbreviated form of this command.

Examples

withnumtheory:

divisors9

1,3,9

(1)

τ9

3

(2)

divisors1

1

(3)

τ0

0

(4)

τ1

1

(5)

divisors20

1,2,4,5,10,20

(6)

τ20

6

(7)

σ020

6

(8)

See Also

ifactor, ifactors, numtheory[divisors], numtheory[factorset], numtheory[sigma]


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