641569920

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{859}}^1$

素因数の和:1270

約数の個数: 128

約数和(自身を含む): 2052648000

約数和(自身を除く): 1411078080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 320, 384, 389, 480, 640, 778, 859, 960, 1167, 1556, 1718, 1920, 1945, 2334, 2577, 3112, 3436, 3890, 4295, 4668, 5154, 5835, 6224, 6872, 7780, 8590, 9336, 10308, 11670, 12448, 12885, 13744, 15560, 17180, 18672, 20616, 23340, 24896, 25770, 27488, 31120, 34360, 37344, 41232, 46680, 49792, 51540, 54976, 62240, 68720, 74688, 82464, 93360, 103080, 109952, 124480, 137440, 149376, 164928, 186720, 206160, 248960, 274880, 329856, 334151, 373440, 412320, 549760, 668302, 746880, 824640, 1002453, 1336604, 1649280, 1670755, 2004906, 2673208, 3341510, 4009812, 5012265, 5346416, 6683020, 8019624, 10024530, 10692832, 13366040, 16039248, 20049060, 21385664, 26732080, 32078496, 40098120, 42771328, 53464160, 64156992, 80196240, 106928320, 128313984, 160392480, 213856640, 320784960, 641569920]

約数ペア:

[(1, 641569920), (2, 320784960), (3, 213856640), (4, 160392480), (5, 128313984), (6, 106928320), (8, 80196240), (10, 64156992), (12, 53464160), (15, 42771328), (16, 40098120), (20, 32078496), (24, 26732080), (30, 21385664), (32, 20049060), (40, 16039248), (48, 13366040), (60, 10692832), (64, 10024530), (80, 8019624), (96, 6683020), (120, 5346416), (128, 5012265), (160, 4009812), (192, 3341510), (240, 2673208), (320, 2004906), (384, 1670755), (389, 1649280), (480, 1336604), (640, 1002453), (778, 824640), (859, 746880), (960, 668302), (1167, 549760), (1556, 412320), (1718, 373440), (1920, 334151), (1945, 329856), (2334, 274880), (2577, 248960), (3112, 206160), (3436, 186720), (3890, 164928), (4295, 149376), (4668, 137440), (5154, 124480), (5835, 109952), (6224, 103080), (6872, 93360), (7780, 82464), (8590, 74688), (9336, 68720), (10308, 62240), (11670, 54976), (12448, 51540), (12885, 49792), (13744, 46680), (15560, 41232), (17180, 37344), (18672, 34360), (20616, 31120), (23340, 27488), (24896, 25770)]