81871371

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{1667}}^1$

素因数の和:1800

約数の個数: 32

約数和(自身を含む): 129703680

約数和(自身を除く): 47832309

約数列:

[1, 3, 9, 17, 27, 51, 107, 153, 321, 459, 963, 1667, 1819, 2889, 5001, 5457, 15003, 16371, 28339, 45009, 49113, 85017, 178369, 255051, 535107, 765153, 1605321, 3032273, 4815963, 9096819, 27290457, 81871371]

約数ペア:

[(1, 81871371), (3, 27290457), (9, 9096819), (17, 4815963), (27, 3032273), (51, 1605321), (107, 765153), (153, 535107), (321, 255051), (459, 178369), (963, 85017), (1667, 49113), (1819, 45009), (2889, 28339), (5001, 16371), (5457, 15003)]