Thread: prime divisors
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Old 2021-06-10, 22:32   #1
MattcAnderson's Avatar
"Matthew Anderson"
Dec 2010
Oregon, USA

24·32·7 Posts
Default prime divisors

Hi again all,

Some of us are familiar with proper divisors.

For example, the proper divisors of 9 are 1 and 3.

Also, the proper divisors of 35 are 5 and 7.


Made a Maple procedure

called ProperDivisors(b).

Has count function

Pretty easy to understand

For example -

CPD(6) = 6

That is count proper divisors is 1 and two and three is 6.

Another example

CPD(19) = 1

See my 'blog o ria'

My (big) question is,

Suppose you have a general positive integer

in factored form

call it d.

So d = p1^e1 * p2^e2 * ...

what is its count of proper divisors?

Is there a Maple function?

what is CPD(d) ?

Let me know.


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