20157176

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^2$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 43272600

約数和(自身を除く): 23115424

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 101, 104, 152, 202, 247, 404, 494, 808, 988, 1313, 1919, 1976, 2626, 3838, 5252, 7676, 10201, 10504, 15352, 20402, 24947, 40804, 49894, 81608, 99788, 132613, 193819, 199576, 265226, 387638, 530452, 775276, 1060904, 1550552, 2519647, 5039294, 10078588, 20157176]

約数ペア:

[(1, 20157176), (2, 10078588), (4, 5039294), (8, 2519647), (13, 1550552), (19, 1060904), (26, 775276), (38, 530452), (52, 387638), (76, 265226), (101, 199576), (104, 193819), (152, 132613), (202, 99788), (247, 81608), (404, 49894), (494, 40804), (808, 24947), (988, 20402), (1313, 15352), (1919, 10504), (1976, 10201), (2626, 7676), (3838, 5252)]