numlib::sumdivisors
-- sum
of divisors of an integernumlib::sumdivisors
(n)
returns the sum of
the positive divisors of the integer n
.
numlib::sumdivisors(n)
n |
- | an integer |
numlib::sumdivisors
(n)
returns a
nonnegative integer.
numlib::sigma
,
numlib::divisors
,
numlib::numdivisors
numlib::sumdivisors
(0)
returns
0
.numlib::sumdivisors
returns the function call with
evaluated argument if the argument is not a number.numlib::sumdivisors
returns an error if the argument
evaluates to a number of wrong type.numlib::sumdivisors
(n)
is the same as
numlib::sigma
(n,1)
.The sum of the positive divisors of 120 is 360:
>> numlib::sumdivisors(120)
360
The sum of the positive divisors of -63 is 104:
>> numlib::sumdivisors(-63)
104
ifactor
is used for factoring
n
.