21565440

素因数分解:

$2^{12}\times 3^4\times 5^1\times {\mathrm{13}}^1$

素因数の和:54

約数の個数: 260

約数和(自身を含む): 83253324

約数和(自身を除く): 61687884

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 27, 30, 32, 36, 39, 40, 45, 48, 52, 54, 60, 64, 65, 72, 78, 80, 81, 90, 96, 104, 108, 117, 120, 128, 130, 135, 144, 156, 160, 162, 180, 192, 195, 208, 216, 234, 240, 256, 260, 270, 288, 312, 320, 324, 351, 360, 384, 390, 405, 416, 432, 468, 480, 512, 520, 540, 576, 585, 624, 640, 648, 702, 720, 768, 780, 810, 832, 864, 936, 960, 1024, 1040, 1053, 1080, 1152, 1170, 1248, 1280, 1296, 1404, 1440, 1536, 1560, 1620, 1664, 1728, 1755, 1872, 1920, 2048, 2080, 2106, 2160, 2304, 2340, 2496, 2560, 2592, 2808, 2880, 3072, 3120, 3240, 3328, 3456, 3510, 3744, 3840, 4096, 4160, 4212, 4320, 4608, 4680, 4992, 5120, 5184, 5265, 5616, 5760, 6144, 6240, 6480, 6656, 6912, 7020, 7488, 7680, 8320, 8424, 8640, 9216, 9360, 9984, 10240, 10368, 10530, 11232, 11520, 12288, 12480, 12960, 13312, 13824, 14040, 14976, 15360, 16640, 16848, 17280, 18432, 18720, 19968, 20480, 20736, 21060, 22464, 23040, 24960, 25920, 26624, 27648, 28080, 29952, 30720, 33280, 33696, 34560, 36864, 37440, 39936, 41472, 42120, 44928, 46080, 49920, 51840, 53248, 55296, 56160, 59904, 61440, 66560, 67392, 69120, 74880, 79872, 82944, 84240, 89856, 92160, 99840, 103680, 110592, 112320, 119808, 133120, 134784, 138240, 149760, 159744, 165888, 168480, 179712, 184320, 199680, 207360, 224640, 239616, 266240, 269568, 276480, 299520, 331776, 336960, 359424, 399360, 414720, 449280, 479232, 539136, 552960, 599040, 673920, 718848, 798720, 829440, 898560, 1078272, 1198080, 1347840, 1437696, 1658880, 1797120, 2156544, 2396160, 2695680, 3594240, 4313088, 5391360, 7188480, 10782720, 21565440]

約数ペア:

[(1, 21565440), (2, 10782720), (3, 7188480), (4, 5391360), (5, 4313088), (6, 3594240), (8, 2695680), (9, 2396160), (10, 2156544), (12, 1797120), (13, 1658880), (15, 1437696), (16, 1347840), (18, 1198080), (20, 1078272), (24, 898560), (26, 829440), (27, 798720), (30, 718848), (32, 673920), (36, 599040), (39, 552960), (40, 539136), (45, 479232), (48, 449280), (52, 414720), (54, 399360), (60, 359424), (64, 336960), (65, 331776), (72, 299520), (78, 276480), (80, 269568), (81, 266240), (90, 239616), (96, 224640), (104, 207360), (108, 199680), (117, 184320), (120, 179712), (128, 168480), (130, 165888), (135, 159744), (144, 149760), (156, 138240), (160, 134784), (162, 133120), (180, 119808), (192, 112320), (195, 110592), (208, 103680), (216, 99840), (234, 92160), (240, 89856), (256, 84240), (260, 82944), (270, 79872), (288, 74880), (312, 69120), (320, 67392), (324, 66560), (351, 61440), (360, 59904), (384, 56160), (390, 55296), (405, 53248), (416, 51840), (432, 49920), (468, 46080), (480, 44928), (512, 42120), (520, 41472), (540, 39936), (576, 37440), (585, 36864), (624, 34560), (640, 33696), (648, 33280), (702, 30720), (720, 29952), (768, 28080), (780, 27648), (810, 26624), (832, 25920), (864, 24960), (936, 23040), (960, 22464), (1024, 21060), (1040, 20736), (1053, 20480), (1080, 19968), (1152, 18720), (1170, 18432), (1248, 17280), (1280, 16848), (1296, 16640), (1404, 15360), (1440, 14976), (1536, 14040), (1560, 13824), (1620, 13312), (1664, 12960), (1728, 12480), (1755, 12288), (1872, 11520), (1920, 11232), (2048, 10530), (2080, 10368), (2106, 10240), (2160, 9984), (2304, 9360), (2340, 9216), (2496, 8640), (2560, 8424), (2592, 8320), (2808, 7680), (2880, 7488), (3072, 7020), (3120, 6912), (3240, 6656), (3328, 6480), (3456, 6240), (3510, 6144), (3744, 5760), (3840, 5616), (4096, 5265), (4160, 5184), (4212, 5120), (4320, 4992), (4608, 4680)]