21031920

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1$

素因数の和:149

約数の個数: 320

約数和(自身を含む): 89994240

約数和(自身を除く): 68962320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 18, 20, 21, 24, 26, 27, 28, 30, 35, 36, 39, 40, 42, 45, 48, 52, 54, 56, 60, 63, 65, 70, 72, 78, 80, 84, 90, 91, 104, 105, 107, 108, 112, 117, 120, 126, 130, 135, 140, 144, 156, 168, 180, 182, 189, 195, 208, 210, 214, 216, 234, 240, 252, 260, 270, 273, 280, 312, 315, 321, 336, 351, 360, 364, 378, 390, 420, 428, 432, 455, 468, 504, 520, 535, 540, 546, 560, 585, 624, 630, 642, 702, 720, 728, 749, 756, 780, 819, 840, 856, 910, 936, 945, 963, 1008, 1040, 1070, 1080, 1092, 1170, 1260, 1284, 1365, 1391, 1404, 1456, 1498, 1512, 1560, 1605, 1638, 1680, 1712, 1755, 1820, 1872, 1890, 1926, 2140, 2160, 2184, 2247, 2340, 2457, 2520, 2568, 2730, 2782, 2808, 2889, 2996, 3024, 3120, 3210, 3276, 3510, 3640, 3745, 3780, 3852, 4095, 4173, 4280, 4368, 4494, 4680, 4815, 4914, 5040, 5136, 5460, 5564, 5616, 5778, 5992, 6420, 6552, 6741, 6955, 7020, 7280, 7490, 7560, 7704, 8190, 8346, 8560, 8988, 9360, 9630, 9737, 9828, 10920, 11128, 11235, 11556, 11984, 12285, 12519, 12840, 13104, 13482, 13910, 14040, 14445, 14980, 15120, 15408, 16380, 16692, 17976, 19260, 19474, 19656, 20223, 20865, 21840, 22256, 22470, 23112, 24570, 25038, 25680, 26964, 27820, 28080, 28890, 29211, 29960, 32760, 33384, 33705, 35952, 37557, 38520, 38948, 39312, 40446, 41730, 44940, 46224, 48685, 49140, 50076, 53928, 55640, 57780, 58422, 59920, 62595, 65520, 66768, 67410, 75114, 77040, 77896, 80892, 83460, 87633, 89880, 97370, 98280, 100152, 101115, 107856, 111280, 115560, 116844, 125190, 134820, 146055, 150228, 155792, 161784, 166920, 175266, 179760, 187785, 194740, 196560, 200304, 202230, 231120, 233688, 250380, 262899, 269640, 292110, 300456, 323568, 333840, 350532, 375570, 389480, 404460, 438165, 467376, 500760, 525798, 539280, 584220, 600912, 701064, 751140, 778960, 808920, 876330, 1001520, 1051596, 1168440, 1314495, 1402128, 1502280, 1617840, 1752660, 2103192, 2336880, 2628990, 3004560, 3505320, 4206384, 5257980, 7010640, 10515960, 21031920]

約数ペア:

[(1, 21031920), (2, 10515960), (3, 7010640), (4, 5257980), (5, 4206384), (6, 3505320), (7, 3004560), (8, 2628990), (9, 2336880), (10, 2103192), (12, 1752660), (13, 1617840), (14, 1502280), (15, 1402128), (16, 1314495), (18, 1168440), (20, 1051596), (21, 1001520), (24, 876330), (26, 808920), (27, 778960), (28, 751140), (30, 701064), (35, 600912), (36, 584220), (39, 539280), (40, 525798), (42, 500760), (45, 467376), (48, 438165), (52, 404460), (54, 389480), (56, 375570), (60, 350532), (63, 333840), (65, 323568), (70, 300456), (72, 292110), (78, 269640), (80, 262899), (84, 250380), (90, 233688), (91, 231120), (104, 202230), (105, 200304), (107, 196560), (108, 194740), (112, 187785), (117, 179760), (120, 175266), (126, 166920), (130, 161784), (135, 155792), (140, 150228), (144, 146055), (156, 134820), (168, 125190), (180, 116844), (182, 115560), (189, 111280), (195, 107856), (208, 101115), (210, 100152), (214, 98280), (216, 97370), (234, 89880), (240, 87633), (252, 83460), (260, 80892), (270, 77896), (273, 77040), (280, 75114), (312, 67410), (315, 66768), (321, 65520), (336, 62595), (351, 59920), (360, 58422), (364, 57780), (378, 55640), (390, 53928), (420, 50076), (428, 49140), (432, 48685), (455, 46224), (468, 44940), (504, 41730), (520, 40446), (535, 39312), (540, 38948), (546, 38520), (560, 37557), (585, 35952), (624, 33705), (630, 33384), (642, 32760), (702, 29960), (720, 29211), (728, 28890), (749, 28080), (756, 27820), (780, 26964), (819, 25680), (840, 25038), (856, 24570), (910, 23112), (936, 22470), (945, 22256), (963, 21840), (1008, 20865), (1040, 20223), (1070, 19656), (1080, 19474), (1092, 19260), (1170, 17976), (1260, 16692), (1284, 16380), (1365, 15408), (1391, 15120), (1404, 14980), (1456, 14445), (1498, 14040), (1512, 13910), (1560, 13482), (1605, 13104), (1638, 12840), (1680, 12519), (1712, 12285), (1755, 11984), (1820, 11556), (1872, 11235), (1890, 11128), (1926, 10920), (2140, 9828), (2160, 9737), (2184, 9630), (2247, 9360), (2340, 8988), (2457, 8560), (2520, 8346), (2568, 8190), (2730, 7704), (2782, 7560), (2808, 7490), (2889, 7280), (2996, 7020), (3024, 6955), (3120, 6741), (3210, 6552), (3276, 6420), (3510, 5992), (3640, 5778), (3745, 5616), (3780, 5564), (3852, 5460), (4095, 5136), (4173, 5040), (4280, 4914), (4368, 4815), (4494, 4680)]