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The Maxima on-line user's manual

Algebra Calculator

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Divsum Calculator

Divsum

Function: divsum (<n>, <k>)

divsum(5^2*7*13*19*41*43*47*51)/(2*5^2*7*13*19*41*43*47*51), numer;

Function: divsum (<n>) divsum (<n>, <k>) returns the sum of the divisors of <n> raised to the <k>th power.

divsum (<n>) returns the sum of the divisors of <n>.

          (%i1) divsum (12);
          (%o1)                          28
          (%i2) 1 + 2 + 3 + 4 + 6 + 12;
          (%o2)                          28
          (%i3) divsum (12, 2);
          (%o3)                          210
          (%i4) 1^2 + 2^2 + 3^2 + 4^2 + 6^2 + 12^2;
          (%o4)                          210

(%o1)                                true
(%i2) 

Divsum Example

Related Examples

divsum-do-print

d(n):=divsum(n)-n;

isa(n):=if d(d(n))=n ...

for i : 2 thru 100 do...

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divsum-numer

divsum(37^10*41^10*43...

Calculate

divsum-numer

divsum(5^4*13^5*43^2*...

Calculate

divsum-numer

divsum(37^10*41^10*43...

Calculate

divsum-do-print

d(n):=divsum(n)-n;

isa(n):=if d(d(n))=n ...

c:0;

Calculate

divsum-numer

divsum(5^5*13^7*43^2*...

Calculate

divsum-numer

divsum(37^10*41^10*43...

Calculate

divsum-numer

divsum(2^2*13^1*17^1*...

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divsum-numer

divsum(5^3*7^3*13^5*1...

Calculate

divsum

divsum(37*41)/(2*37*41);

Calculate