31440640

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1$

素因数の和:79

約数の個数: 216

約数和(自身を含む): 97866720

約数和(自身を除く): 66426080

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 29, 32, 35, 40, 44, 55, 56, 58, 64, 70, 77, 80, 88, 110, 112, 116, 121, 128, 140, 145, 154, 160, 176, 203, 220, 224, 232, 242, 256, 280, 290, 308, 319, 320, 352, 385, 406, 440, 448, 464, 484, 560, 580, 605, 616, 638, 640, 704, 770, 812, 847, 880, 896, 928, 968, 1015, 1120, 1160, 1210, 1232, 1276, 1280, 1408, 1540, 1595, 1624, 1694, 1760, 1792, 1856, 1936, 2030, 2233, 2240, 2320, 2420, 2464, 2552, 2816, 3080, 3190, 3248, 3388, 3509, 3520, 3712, 3872, 4060, 4235, 4466, 4480, 4640, 4840, 4928, 5104, 6160, 6380, 6496, 6776, 7018, 7040, 7424, 7744, 8120, 8470, 8932, 8960, 9280, 9680, 9856, 10208, 11165, 12320, 12760, 12992, 13552, 14036, 14080, 15488, 16240, 16940, 17545, 17864, 18560, 19360, 19712, 20416, 22330, 24563, 24640, 25520, 25984, 27104, 28072, 30976, 32480, 33880, 35090, 35728, 37120, 38720, 40832, 44660, 49126, 49280, 51040, 51968, 54208, 56144, 64960, 67760, 70180, 71456, 77440, 81664, 89320, 98252, 98560, 102080, 108416, 112288, 122815, 129920, 135520, 140360, 142912, 154880, 178640, 196504, 204160, 216832, 224576, 245630, 259840, 271040, 280720, 285824, 357280, 393008, 408320, 449152, 491260, 542080, 561440, 571648, 714560, 786016, 898304, 982520, 1084160, 1122880, 1429120, 1572032, 1965040, 2245760, 2858240, 3144064, 3930080, 4491520, 6288128, 7860160, 15720320, 31440640]

約数ペア:

[(1, 31440640), (2, 15720320), (4, 7860160), (5, 6288128), (7, 4491520), (8, 3930080), (10, 3144064), (11, 2858240), (14, 2245760), (16, 1965040), (20, 1572032), (22, 1429120), (28, 1122880), (29, 1084160), (32, 982520), (35, 898304), (40, 786016), (44, 714560), (55, 571648), (56, 561440), (58, 542080), (64, 491260), (70, 449152), (77, 408320), (80, 393008), (88, 357280), (110, 285824), (112, 280720), (116, 271040), (121, 259840), (128, 245630), (140, 224576), (145, 216832), (154, 204160), (160, 196504), (176, 178640), (203, 154880), (220, 142912), (224, 140360), (232, 135520), (242, 129920), (256, 122815), (280, 112288), (290, 108416), (308, 102080), (319, 98560), (320, 98252), (352, 89320), (385, 81664), (406, 77440), (440, 71456), (448, 70180), (464, 67760), (484, 64960), (560, 56144), (580, 54208), (605, 51968), (616, 51040), (638, 49280), (640, 49126), (704, 44660), (770, 40832), (812, 38720), (847, 37120), (880, 35728), (896, 35090), (928, 33880), (968, 32480), (1015, 30976), (1120, 28072), (1160, 27104), (1210, 25984), (1232, 25520), (1276, 24640), (1280, 24563), (1408, 22330), (1540, 20416), (1595, 19712), (1624, 19360), (1694, 18560), (1760, 17864), (1792, 17545), (1856, 16940), (1936, 16240), (2030, 15488), (2233, 14080), (2240, 14036), (2320, 13552), (2420, 12992), (2464, 12760), (2552, 12320), (2816, 11165), (3080, 10208), (3190, 9856), (3248, 9680), (3388, 9280), (3509, 8960), (3520, 8932), (3712, 8470), (3872, 8120), (4060, 7744), (4235, 7424), (4466, 7040), (4480, 7018), (4640, 6776), (4840, 6496), (4928, 6380), (5104, 6160)]