640887552

素因数分解:

$2^8\times 3^4\times {\mathrm{31}}^1\times {\mathrm{997}}^1$

素因数の和:1056

約数の個数: 180

約数和(自身を含む): 1974634816

約数和(自身を除く): 1333747264

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 31, 32, 36, 48, 54, 62, 64, 72, 81, 93, 96, 108, 124, 128, 144, 162, 186, 192, 216, 248, 256, 279, 288, 324, 372, 384, 432, 496, 558, 576, 648, 744, 768, 837, 864, 992, 997, 1116, 1152, 1296, 1488, 1674, 1728, 1984, 1994, 2232, 2304, 2511, 2592, 2976, 2991, 3348, 3456, 3968, 3988, 4464, 5022, 5184, 5952, 5982, 6696, 6912, 7936, 7976, 8928, 8973, 10044, 10368, 11904, 11964, 13392, 15952, 17856, 17946, 20088, 20736, 23808, 23928, 26784, 26919, 30907, 31904, 35712, 35892, 40176, 47856, 53568, 53838, 61814, 63808, 71424, 71784, 80352, 80757, 92721, 95712, 107136, 107676, 123628, 127616, 143568, 160704, 161514, 185442, 191424, 214272, 215352, 247256, 255232, 278163, 287136, 321408, 323028, 370884, 382848, 430704, 494512, 556326, 574272, 642816, 646056, 741768, 765696, 834489, 861408, 989024, 1112652, 1148544, 1292112, 1483536, 1668978, 1722816, 1978048, 2225304, 2297088, 2503467, 2584224, 2967072, 3337956, 3445632, 3956096, 4450608, 5006934, 5168448, 5934144, 6675912, 6891264, 7912192, 8901216, 10013868, 10336896, 11868288, 13351824, 17802432, 20027736, 20673792, 23736576, 26703648, 35604864, 40055472, 53407296, 71209728, 80110944, 106814592, 160221888, 213629184, 320443776, 640887552]

約数ペア:

[(1, 640887552), (2, 320443776), (3, 213629184), (4, 160221888), (6, 106814592), (8, 80110944), (9, 71209728), (12, 53407296), (16, 40055472), (18, 35604864), (24, 26703648), (27, 23736576), (31, 20673792), (32, 20027736), (36, 17802432), (48, 13351824), (54, 11868288), (62, 10336896), (64, 10013868), (72, 8901216), (81, 7912192), (93, 6891264), (96, 6675912), (108, 5934144), (124, 5168448), (128, 5006934), (144, 4450608), (162, 3956096), (186, 3445632), (192, 3337956), (216, 2967072), (248, 2584224), (256, 2503467), (279, 2297088), (288, 2225304), (324, 1978048), (372, 1722816), (384, 1668978), (432, 1483536), (496, 1292112), (558, 1148544), (576, 1112652), (648, 989024), (744, 861408), (768, 834489), (837, 765696), (864, 741768), (992, 646056), (997, 642816), (1116, 574272), (1152, 556326), (1296, 494512), (1488, 430704), (1674, 382848), (1728, 370884), (1984, 323028), (1994, 321408), (2232, 287136), (2304, 278163), (2511, 255232), (2592, 247256), (2976, 215352), (2991, 214272), (3348, 191424), (3456, 185442), (3968, 161514), (3988, 160704), (4464, 143568), (5022, 127616), (5184, 123628), (5952, 107676), (5982, 107136), (6696, 95712), (6912, 92721), (7936, 80757), (7976, 80352), (8928, 71784), (8973, 71424), (10044, 63808), (10368, 61814), (11904, 53838), (11964, 53568), (13392, 47856), (15952, 40176), (17856, 35892), (17946, 35712), (20088, 31904), (20736, 30907), (23808, 26919), (23928, 26784)]