640106880

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{491}}^1$

素因数の和:617

約数の個数: 256

約数和(自身を含む): 2360655360

約数和(自身を除く): 1720548480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 97, 105, 112, 120, 128, 140, 160, 168, 192, 194, 210, 224, 240, 280, 291, 320, 336, 384, 388, 420, 448, 480, 485, 491, 560, 582, 640, 672, 679, 776, 840, 896, 960, 970, 982, 1120, 1164, 1344, 1358, 1455, 1473, 1552, 1680, 1920, 1940, 1964, 2037, 2240, 2328, 2455, 2688, 2716, 2910, 2946, 3104, 3360, 3395, 3437, 3880, 3928, 4074, 4480, 4656, 4910, 5432, 5820, 5892, 6208, 6720, 6790, 6874, 7365, 7760, 7856, 8148, 9312, 9820, 10185, 10311, 10864, 11640, 11784, 12416, 13440, 13580, 13748, 14730, 15520, 15712, 16296, 17185, 18624, 19640, 20370, 20622, 21728, 23280, 23568, 27160, 27496, 29460, 31040, 31424, 32592, 34370, 37248, 39280, 40740, 41244, 43456, 46560, 47136, 47627, 51555, 54320, 54992, 58920, 62080, 62848, 65184, 68740, 78560, 81480, 82488, 86912, 93120, 94272, 95254, 103110, 108640, 109984, 117840, 130368, 137480, 142881, 157120, 162960, 164976, 186240, 188544, 190508, 206220, 217280, 219968, 235680, 238135, 260736, 274960, 285762, 314240, 325920, 329952, 333389, 381016, 412440, 434560, 439936, 471360, 476270, 549920, 571524, 651840, 659904, 666778, 714405, 762032, 824880, 942720, 952540, 1000167, 1099840, 1143048, 1303680, 1319808, 1333556, 1428810, 1524064, 1649760, 1666945, 1905080, 2000334, 2199680, 2286096, 2667112, 2857620, 3048128, 3299520, 3333890, 3810160, 4000668, 4572192, 5000835, 5334224, 5715240, 6096256, 6599040, 6667780, 7620320, 8001336, 9144384, 10001670, 10668448, 11430480, 13335560, 15240640, 16002672, 18288768, 20003340, 21336896, 22860960, 26671120, 30481280, 32005344, 40006680, 42673792, 45721920, 53342240, 64010688, 80013360, 91443840, 106684480, 128021376, 160026720, 213368960, 320053440, 640106880]

約数ペア:

[(1, 640106880), (2, 320053440), (3, 213368960), (4, 160026720), (5, 128021376), (6, 106684480), (7, 91443840), (8, 80013360), (10, 64010688), (12, 53342240), (14, 45721920), (15, 42673792), (16, 40006680), (20, 32005344), (21, 30481280), (24, 26671120), (28, 22860960), (30, 21336896), (32, 20003340), (35, 18288768), (40, 16002672), (42, 15240640), (48, 13335560), (56, 11430480), (60, 10668448), (64, 10001670), (70, 9144384), (80, 8001336), (84, 7620320), (96, 6667780), (97, 6599040), (105, 6096256), (112, 5715240), (120, 5334224), (128, 5000835), (140, 4572192), (160, 4000668), (168, 3810160), (192, 3333890), (194, 3299520), (210, 3048128), (224, 2857620), (240, 2667112), (280, 2286096), (291, 2199680), (320, 2000334), (336, 1905080), (384, 1666945), (388, 1649760), (420, 1524064), (448, 1428810), (480, 1333556), (485, 1319808), (491, 1303680), (560, 1143048), (582, 1099840), (640, 1000167), (672, 952540), (679, 942720), (776, 824880), (840, 762032), (896, 714405), (960, 666778), (970, 659904), (982, 651840), (1120, 571524), (1164, 549920), (1344, 476270), (1358, 471360), (1455, 439936), (1473, 434560), (1552, 412440), (1680, 381016), (1920, 333389), (1940, 329952), (1964, 325920), (2037, 314240), (2240, 285762), (2328, 274960), (2455, 260736), (2688, 238135), (2716, 235680), (2910, 219968), (2946, 217280), (3104, 206220), (3360, 190508), (3395, 188544), (3437, 186240), (3880, 164976), (3928, 162960), (4074, 157120), (4480, 142881), (4656, 137480), (4910, 130368), (5432, 117840), (5820, 109984), (5892, 108640), (6208, 103110), (6720, 95254), (6790, 94272), (6874, 93120), (7365, 86912), (7760, 82488), (7856, 81480), (8148, 78560), (9312, 68740), (9820, 65184), (10185, 62848), (10311, 62080), (10864, 58920), (11640, 54992), (11784, 54320), (12416, 51555), (13440, 47627), (13580, 47136), (13748, 46560), (14730, 43456), (15520, 41244), (15712, 40740), (16296, 39280), (17185, 37248), (18624, 34370), (19640, 32592), (20370, 31424), (20622, 31040), (21728, 29460), (23280, 27496), (23568, 27160)]