164235520

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{4139}}^1$

素因数の和:4191

約数の個数: 72

約数和(自身を含む): 406183680

約数和(自身を除く): 241948160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2480, 3968, 4139, 4960, 7936, 8278, 9920, 16556, 19840, 20695, 33112, 39680, 41390, 66224, 82780, 128309, 132448, 165560, 256618, 264896, 331120, 513236, 529792, 641545, 662240, 1026472, 1059584, 1283090, 1324480, 2052944, 2566180, 2648960, 4105888, 5132360, 5297920, 8211776, 10264720, 16423552, 20529440, 32847104, 41058880, 82117760, 164235520]

約数ペア:

[(1, 164235520), (2, 82117760), (4, 41058880), (5, 32847104), (8, 20529440), (10, 16423552), (16, 10264720), (20, 8211776), (31, 5297920), (32, 5132360), (40, 4105888), (62, 2648960), (64, 2566180), (80, 2052944), (124, 1324480), (128, 1283090), (155, 1059584), (160, 1026472), (248, 662240), (256, 641545), (310, 529792), (320, 513236), (496, 331120), (620, 264896), (640, 256618), (992, 165560), (1240, 132448), (1280, 128309), (1984, 82780), (2480, 66224), (3968, 41390), (4139, 39680), (4960, 33112), (7936, 20695), (8278, 19840), (9920, 16556)]