21329280

素因数分解:

$2^7\times 3^2\times 5^1\times 7^1\times {\mathrm{23}}^2$

素因数の和:78

約数の個数: 288

約数和(自身を含む): 87993360

約数和(自身を除く): 66664080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 23, 24, 28, 30, 32, 35, 36, 40, 42, 45, 46, 48, 56, 60, 63, 64, 69, 70, 72, 80, 84, 90, 92, 96, 105, 112, 115, 120, 126, 128, 138, 140, 144, 160, 161, 168, 180, 184, 192, 207, 210, 224, 230, 240, 252, 276, 280, 288, 315, 320, 322, 336, 345, 360, 368, 384, 414, 420, 448, 460, 480, 483, 504, 529, 552, 560, 576, 630, 640, 644, 672, 690, 720, 736, 805, 828, 840, 896, 920, 960, 966, 1008, 1035, 1058, 1104, 1120, 1152, 1260, 1288, 1344, 1380, 1440, 1449, 1472, 1587, 1610, 1656, 1680, 1840, 1920, 1932, 2016, 2070, 2116, 2208, 2240, 2415, 2520, 2576, 2645, 2688, 2760, 2880, 2898, 2944, 3174, 3220, 3312, 3360, 3680, 3703, 3864, 4032, 4140, 4232, 4416, 4480, 4761, 4830, 5040, 5152, 5290, 5520, 5760, 5796, 6348, 6440, 6624, 6720, 7245, 7360, 7406, 7728, 7935, 8064, 8280, 8464, 8832, 9522, 9660, 10080, 10304, 10580, 11040, 11109, 11592, 12696, 12880, 13248, 13440, 14490, 14720, 14812, 15456, 15870, 16560, 16928, 18515, 19044, 19320, 20160, 20608, 21160, 22080, 22218, 23184, 23805, 25392, 25760, 26496, 28980, 29624, 30912, 31740, 33120, 33327, 33856, 37030, 38088, 38640, 40320, 42320, 44160, 44436, 46368, 47610, 50784, 51520, 55545, 57960, 59248, 61824, 63480, 66240, 66654, 67712, 74060, 76176, 77280, 84640, 88872, 92736, 95220, 101568, 103040, 111090, 115920, 118496, 126960, 132480, 133308, 148120, 152352, 154560, 166635, 169280, 177744, 185472, 190440, 203136, 222180, 231840, 236992, 253920, 266616, 296240, 304704, 309120, 333270, 338560, 355488, 380880, 444360, 463680, 473984, 507840, 533232, 592480, 609408, 666540, 710976, 761760, 888720, 927360, 1015680, 1066464, 1184960, 1333080, 1421952, 1523520, 1777440, 2132928, 2369920, 2666160, 3047040, 3554880, 4265856, 5332320, 7109760, 10664640, 21329280]

約数ペア:

[(1, 21329280), (2, 10664640), (3, 7109760), (4, 5332320), (5, 4265856), (6, 3554880), (7, 3047040), (8, 2666160), (9, 2369920), (10, 2132928), (12, 1777440), (14, 1523520), (15, 1421952), (16, 1333080), (18, 1184960), (20, 1066464), (21, 1015680), (23, 927360), (24, 888720), (28, 761760), (30, 710976), (32, 666540), (35, 609408), (36, 592480), (40, 533232), (42, 507840), (45, 473984), (46, 463680), (48, 444360), (56, 380880), (60, 355488), (63, 338560), (64, 333270), (69, 309120), (70, 304704), (72, 296240), (80, 266616), (84, 253920), (90, 236992), (92, 231840), (96, 222180), (105, 203136), (112, 190440), (115, 185472), (120, 177744), (126, 169280), (128, 166635), (138, 154560), (140, 152352), (144, 148120), (160, 133308), (161, 132480), (168, 126960), (180, 118496), (184, 115920), (192, 111090), (207, 103040), (210, 101568), (224, 95220), (230, 92736), (240, 88872), (252, 84640), (276, 77280), (280, 76176), (288, 74060), (315, 67712), (320, 66654), (322, 66240), (336, 63480), (345, 61824), (360, 59248), (368, 57960), (384, 55545), (414, 51520), (420, 50784), (448, 47610), (460, 46368), (480, 44436), (483, 44160), (504, 42320), (529, 40320), (552, 38640), (560, 38088), (576, 37030), (630, 33856), (640, 33327), (644, 33120), (672, 31740), (690, 30912), (720, 29624), (736, 28980), (805, 26496), (828, 25760), (840, 25392), (896, 23805), (920, 23184), (960, 22218), (966, 22080), (1008, 21160), (1035, 20608), (1058, 20160), (1104, 19320), (1120, 19044), (1152, 18515), (1260, 16928), (1288, 16560), (1344, 15870), (1380, 15456), (1440, 14812), (1449, 14720), (1472, 14490), (1587, 13440), (1610, 13248), (1656, 12880), (1680, 12696), (1840, 11592), (1920, 11109), (1932, 11040), (2016, 10580), (2070, 10304), (2116, 10080), (2208, 9660), (2240, 9522), (2415, 8832), (2520, 8464), (2576, 8280), (2645, 8064), (2688, 7935), (2760, 7728), (2880, 7406), (2898, 7360), (2944, 7245), (3174, 6720), (3220, 6624), (3312, 6440), (3360, 6348), (3680, 5796), (3703, 5760), (3864, 5520), (4032, 5290), (4140, 5152), (4232, 5040), (4416, 4830), (4480, 4761)]