18168921

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{331}}^1$

素因数の和:466

約数の個数: 32

約数和(自身を含む): 28684800

約数和(自身を除く): 10515879

約数列:

[1, 3, 9, 19, 27, 57, 107, 171, 321, 331, 513, 963, 993, 2033, 2889, 2979, 6099, 6289, 8937, 18297, 18867, 35417, 54891, 56601, 106251, 169803, 318753, 672923, 956259, 2018769, 6056307, 18168921]

約数ペア:

[(1, 18168921), (3, 6056307), (9, 2018769), (19, 956259), (27, 672923), (57, 318753), (107, 169803), (171, 106251), (321, 56601), (331, 54891), (513, 35417), (963, 18867), (993, 18297), (2033, 8937), (2889, 6289), (2979, 6099)]