21399840

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1$

素因数の和:232

約数の個数: 288

約数和(自身を含む): 91518336

約数和(自身を除く): 70118496

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 18, 20, 21, 22, 24, 28, 30, 32, 33, 35, 36, 40, 42, 44, 45, 48, 55, 56, 60, 63, 66, 70, 72, 77, 80, 84, 88, 90, 96, 99, 105, 110, 112, 120, 126, 132, 140, 144, 154, 160, 165, 168, 176, 180, 193, 198, 210, 220, 224, 231, 240, 252, 264, 280, 288, 308, 315, 330, 336, 352, 360, 385, 386, 396, 420, 440, 462, 480, 495, 504, 528, 560, 579, 616, 630, 660, 672, 693, 720, 770, 772, 792, 840, 880, 924, 965, 990, 1008, 1056, 1120, 1155, 1158, 1232, 1260, 1320, 1351, 1386, 1440, 1540, 1544, 1584, 1680, 1737, 1760, 1848, 1930, 1980, 2016, 2123, 2310, 2316, 2464, 2520, 2640, 2702, 2772, 2895, 3080, 3088, 3168, 3360, 3465, 3474, 3696, 3860, 3960, 4053, 4246, 4620, 4632, 5040, 5280, 5404, 5544, 5790, 6160, 6176, 6369, 6755, 6930, 6948, 7392, 7720, 7920, 8106, 8492, 8685, 9240, 9264, 10080, 10615, 10808, 11088, 11580, 12159, 12320, 12738, 13510, 13860, 13896, 14861, 15440, 15840, 16212, 16984, 17370, 18480, 18528, 19107, 20265, 21230, 21616, 22176, 23160, 24318, 25476, 27020, 27720, 27792, 29722, 30880, 31845, 32424, 33968, 34740, 36960, 38214, 40530, 42460, 43232, 44583, 46320, 48636, 50952, 54040, 55440, 55584, 59444, 60795, 63690, 64848, 67936, 69480, 74305, 76428, 81060, 84920, 89166, 92640, 95535, 97272, 101904, 108080, 110880, 118888, 121590, 127380, 129696, 133749, 138960, 148610, 152856, 162120, 169840, 178332, 191070, 194544, 203808, 216160, 222915, 237776, 243180, 254760, 267498, 277920, 297220, 305712, 324240, 339680, 356664, 382140, 389088, 445830, 475552, 486360, 509520, 534996, 594440, 611424, 648480, 668745, 713328, 764280, 891660, 972720, 1019040, 1069992, 1188880, 1337490, 1426656, 1528560, 1783320, 1945440, 2139984, 2377760, 2674980, 3057120, 3566640, 4279968, 5349960, 7133280, 10699920, 21399840]

約数ペア:

[(1, 21399840), (2, 10699920), (3, 7133280), (4, 5349960), (5, 4279968), (6, 3566640), (7, 3057120), (8, 2674980), (9, 2377760), (10, 2139984), (11, 1945440), (12, 1783320), (14, 1528560), (15, 1426656), (16, 1337490), (18, 1188880), (20, 1069992), (21, 1019040), (22, 972720), (24, 891660), (28, 764280), (30, 713328), (32, 668745), (33, 648480), (35, 611424), (36, 594440), (40, 534996), (42, 509520), (44, 486360), (45, 475552), (48, 445830), (55, 389088), (56, 382140), (60, 356664), (63, 339680), (66, 324240), (70, 305712), (72, 297220), (77, 277920), (80, 267498), (84, 254760), (88, 243180), (90, 237776), (96, 222915), (99, 216160), (105, 203808), (110, 194544), (112, 191070), (120, 178332), (126, 169840), (132, 162120), (140, 152856), (144, 148610), (154, 138960), (160, 133749), (165, 129696), (168, 127380), (176, 121590), (180, 118888), (193, 110880), (198, 108080), (210, 101904), (220, 97272), (224, 95535), (231, 92640), (240, 89166), (252, 84920), (264, 81060), (280, 76428), (288, 74305), (308, 69480), (315, 67936), (330, 64848), (336, 63690), (352, 60795), (360, 59444), (385, 55584), (386, 55440), (396, 54040), (420, 50952), (440, 48636), (462, 46320), (480, 44583), (495, 43232), (504, 42460), (528, 40530), (560, 38214), (579, 36960), (616, 34740), (630, 33968), (660, 32424), (672, 31845), (693, 30880), (720, 29722), (770, 27792), (772, 27720), (792, 27020), (840, 25476), (880, 24318), (924, 23160), (965, 22176), (990, 21616), (1008, 21230), (1056, 20265), (1120, 19107), (1155, 18528), (1158, 18480), (1232, 17370), (1260, 16984), (1320, 16212), (1351, 15840), (1386, 15440), (1440, 14861), (1540, 13896), (1544, 13860), (1584, 13510), (1680, 12738), (1737, 12320), (1760, 12159), (1848, 11580), (1930, 11088), (1980, 10808), (2016, 10615), (2123, 10080), (2310, 9264), (2316, 9240), (2464, 8685), (2520, 8492), (2640, 8106), (2702, 7920), (2772, 7720), (2895, 7392), (3080, 6948), (3088, 6930), (3168, 6755), (3360, 6369), (3465, 6176), (3474, 6160), (3696, 5790), (3860, 5544), (3960, 5404), (4053, 5280), (4246, 5040), (4620, 4632)]