20975229

素因数分解:

$3^2\times {\mathrm{11}}^3\times {\mathrm{17}}^1\times {\mathrm{103}}^1$

素因数の和:159

約数の個数: 48

約数和(自身を含む): 35627904

約数和(自身を除く): 14652675

約数列:

[1, 3, 9, 11, 17, 33, 51, 99, 103, 121, 153, 187, 309, 363, 561, 927, 1089, 1133, 1331, 1683, 1751, 2057, 3399, 3993, 5253, 6171, 10197, 11979, 12463, 15759, 18513, 19261, 22627, 37389, 57783, 67881, 112167, 137093, 173349, 203643, 211871, 411279, 635613, 1233837, 1906839, 2330581, 6991743, 20975229]

約数ペア:

[(1, 20975229), (3, 6991743), (9, 2330581), (11, 1906839), (17, 1233837), (33, 635613), (51, 411279), (99, 211871), (103, 203643), (121, 173349), (153, 137093), (187, 112167), (309, 67881), (363, 57783), (561, 37389), (927, 22627), (1089, 19261), (1133, 18513), (1331, 15759), (1683, 12463), (1751, 11979), (2057, 10197), (3399, 6171), (3993, 5253)]