645266040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{647}}^1\times {\mathrm{8311}}^1$

素因数の和:8972

約数の個数: 64

約数和(自身を含む): 1939023360

約数和(自身を除く): 1293757320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 647, 1294, 1941, 2588, 3235, 3882, 5176, 6470, 7764, 8311, 9705, 12940, 15528, 16622, 19410, 24933, 25880, 33244, 38820, 41555, 49866, 66488, 77640, 83110, 99732, 124665, 166220, 199464, 249330, 332440, 498660, 997320, 5377217, 10754434, 16131651, 21508868, 26886085, 32263302, 43017736, 53772170, 64526604, 80658255, 107544340, 129053208, 161316510, 215088680, 322633020, 645266040]

約数ペア:

[(1, 645266040), (2, 322633020), (3, 215088680), (4, 161316510), (5, 129053208), (6, 107544340), (8, 80658255), (10, 64526604), (12, 53772170), (15, 43017736), (20, 32263302), (24, 26886085), (30, 21508868), (40, 16131651), (60, 10754434), (120, 5377217), (647, 997320), (1294, 498660), (1941, 332440), (2588, 249330), (3235, 199464), (3882, 166220), (5176, 124665), (6470, 99732), (7764, 83110), (8311, 77640), (9705, 66488), (12940, 49866), (15528, 41555), (16622, 38820), (19410, 33244), (24933, 25880)]