21409920

素因数分解:

$2^7\times 3^4\times 5^1\times 7^1\times {\mathrm{59}}^1$

素因数の和:97

約数の個数: 320

約数和(自身を含む): 88862400

約数和(自身を除く): 67452480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 54, 56, 59, 60, 63, 64, 70, 72, 80, 81, 84, 90, 96, 105, 108, 112, 118, 120, 126, 128, 135, 140, 144, 160, 162, 168, 177, 180, 189, 192, 210, 216, 224, 236, 240, 252, 270, 280, 288, 295, 315, 320, 324, 336, 354, 360, 378, 384, 405, 413, 420, 432, 448, 472, 480, 504, 531, 540, 560, 567, 576, 590, 630, 640, 648, 672, 708, 720, 756, 810, 826, 840, 864, 885, 896, 944, 945, 960, 1008, 1062, 1080, 1120, 1134, 1152, 1180, 1239, 1260, 1296, 1344, 1416, 1440, 1512, 1593, 1620, 1652, 1680, 1728, 1770, 1888, 1890, 1920, 2016, 2065, 2124, 2160, 2240, 2268, 2360, 2478, 2520, 2592, 2655, 2688, 2832, 2835, 2880, 3024, 3186, 3240, 3304, 3360, 3456, 3540, 3717, 3776, 3780, 4032, 4130, 4248, 4320, 4480, 4536, 4720, 4779, 4956, 5040, 5184, 5310, 5664, 5670, 5760, 6048, 6195, 6372, 6480, 6608, 6720, 7080, 7434, 7552, 7560, 7965, 8064, 8260, 8496, 8640, 9072, 9440, 9558, 9912, 10080, 10368, 10620, 11151, 11328, 11340, 12096, 12390, 12744, 12960, 13216, 13440, 14160, 14868, 15120, 15930, 16520, 16992, 17280, 18144, 18585, 18880, 19116, 19824, 20160, 21240, 22302, 22656, 22680, 23895, 24192, 24780, 25488, 25920, 26432, 28320, 29736, 30240, 31860, 33040, 33453, 33984, 36288, 37170, 37760, 38232, 39648, 40320, 42480, 44604, 45360, 47790, 49560, 50976, 51840, 52864, 55755, 56640, 59472, 60480, 63720, 66080, 66906, 67968, 72576, 74340, 76464, 79296, 84960, 89208, 90720, 95580, 99120, 101952, 111510, 113280, 118944, 120960, 127440, 132160, 133812, 148680, 152928, 158592, 167265, 169920, 178416, 181440, 191160, 198240, 203904, 223020, 237888, 254880, 264320, 267624, 297360, 305856, 334530, 339840, 356832, 362880, 382320, 396480, 446040, 475776, 509760, 535248, 594720, 611712, 669060, 713664, 764640, 792960, 892080, 1019520, 1070496, 1189440, 1338120, 1427328, 1529280, 1784160, 2140992, 2378880, 2676240, 3058560, 3568320, 4281984, 5352480, 7136640, 10704960, 21409920]

約数ペア:

[(1, 21409920), (2, 10704960), (3, 7136640), (4, 5352480), (5, 4281984), (6, 3568320), (7, 3058560), (8, 2676240), (9, 2378880), (10, 2140992), (12, 1784160), (14, 1529280), (15, 1427328), (16, 1338120), (18, 1189440), (20, 1070496), (21, 1019520), (24, 892080), (27, 792960), (28, 764640), (30, 713664), (32, 669060), (35, 611712), (36, 594720), (40, 535248), (42, 509760), (45, 475776), (48, 446040), (54, 396480), (56, 382320), (59, 362880), (60, 356832), (63, 339840), (64, 334530), (70, 305856), (72, 297360), (80, 267624), (81, 264320), (84, 254880), (90, 237888), (96, 223020), (105, 203904), (108, 198240), (112, 191160), (118, 181440), (120, 178416), (126, 169920), (128, 167265), (135, 158592), (140, 152928), (144, 148680), (160, 133812), (162, 132160), (168, 127440), (177, 120960), (180, 118944), (189, 113280), (192, 111510), (210, 101952), (216, 99120), (224, 95580), (236, 90720), (240, 89208), (252, 84960), (270, 79296), (280, 76464), (288, 74340), (295, 72576), (315, 67968), (320, 66906), (324, 66080), (336, 63720), (354, 60480), (360, 59472), (378, 56640), (384, 55755), (405, 52864), (413, 51840), (420, 50976), (432, 49560), (448, 47790), (472, 45360), (480, 44604), (504, 42480), (531, 40320), (540, 39648), (560, 38232), (567, 37760), (576, 37170), (590, 36288), (630, 33984), (640, 33453), (648, 33040), (672, 31860), (708, 30240), (720, 29736), (756, 28320), (810, 26432), (826, 25920), (840, 25488), (864, 24780), (885, 24192), (896, 23895), (944, 22680), (945, 22656), (960, 22302), (1008, 21240), (1062, 20160), (1080, 19824), (1120, 19116), (1134, 18880), (1152, 18585), (1180, 18144), (1239, 17280), (1260, 16992), (1296, 16520), (1344, 15930), (1416, 15120), (1440, 14868), (1512, 14160), (1593, 13440), (1620, 13216), (1652, 12960), (1680, 12744), (1728, 12390), (1770, 12096), (1888, 11340), (1890, 11328), (1920, 11151), (2016, 10620), (2065, 10368), (2124, 10080), (2160, 9912), (2240, 9558), (2268, 9440), (2360, 9072), (2478, 8640), (2520, 8496), (2592, 8260), (2655, 8064), (2688, 7965), (2832, 7560), (2835, 7552), (2880, 7434), (3024, 7080), (3186, 6720), (3240, 6608), (3304, 6480), (3360, 6372), (3456, 6195), (3540, 6048), (3717, 5760), (3776, 5670), (3780, 5664), (4032, 5310), (4130, 5184), (4248, 5040), (4320, 4956), (4480, 4779), (4536, 4720)]