21073920

素因数分解:

$2^{12}\times 3^1\times 5^1\times 7^3$

素因数の和:53

約数の個数: 208

約数和(自身を含む): 78633600

約数和(自身を除く): 57559680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 49, 56, 60, 64, 70, 80, 84, 96, 98, 105, 112, 120, 128, 140, 147, 160, 168, 192, 196, 210, 224, 240, 245, 256, 280, 294, 320, 336, 343, 384, 392, 420, 448, 480, 490, 512, 560, 588, 640, 672, 686, 735, 768, 784, 840, 896, 960, 980, 1024, 1029, 1120, 1176, 1280, 1344, 1372, 1470, 1536, 1568, 1680, 1715, 1792, 1920, 1960, 2048, 2058, 2240, 2352, 2560, 2688, 2744, 2940, 3072, 3136, 3360, 3430, 3584, 3840, 3920, 4096, 4116, 4480, 4704, 5120, 5145, 5376, 5488, 5880, 6144, 6272, 6720, 6860, 7168, 7680, 7840, 8232, 8960, 9408, 10240, 10290, 10752, 10976, 11760, 12288, 12544, 13440, 13720, 14336, 15360, 15680, 16464, 17920, 18816, 20480, 20580, 21504, 21952, 23520, 25088, 26880, 27440, 28672, 30720, 31360, 32928, 35840, 37632, 41160, 43008, 43904, 47040, 50176, 53760, 54880, 61440, 62720, 65856, 71680, 75264, 82320, 86016, 87808, 94080, 100352, 107520, 109760, 125440, 131712, 143360, 150528, 164640, 175616, 188160, 200704, 215040, 219520, 250880, 263424, 301056, 329280, 351232, 376320, 430080, 439040, 501760, 526848, 602112, 658560, 702464, 752640, 878080, 1003520, 1053696, 1317120, 1404928, 1505280, 1756160, 2107392, 2634240, 3010560, 3512320, 4214784, 5268480, 7024640, 10536960, 21073920]

約数ペア:

[(1, 21073920), (2, 10536960), (3, 7024640), (4, 5268480), (5, 4214784), (6, 3512320), (7, 3010560), (8, 2634240), (10, 2107392), (12, 1756160), (14, 1505280), (15, 1404928), (16, 1317120), (20, 1053696), (21, 1003520), (24, 878080), (28, 752640), (30, 702464), (32, 658560), (35, 602112), (40, 526848), (42, 501760), (48, 439040), (49, 430080), (56, 376320), (60, 351232), (64, 329280), (70, 301056), (80, 263424), (84, 250880), (96, 219520), (98, 215040), (105, 200704), (112, 188160), (120, 175616), (128, 164640), (140, 150528), (147, 143360), (160, 131712), (168, 125440), (192, 109760), (196, 107520), (210, 100352), (224, 94080), (240, 87808), (245, 86016), (256, 82320), (280, 75264), (294, 71680), (320, 65856), (336, 62720), (343, 61440), (384, 54880), (392, 53760), (420, 50176), (448, 47040), (480, 43904), (490, 43008), (512, 41160), (560, 37632), (588, 35840), (640, 32928), (672, 31360), (686, 30720), (735, 28672), (768, 27440), (784, 26880), (840, 25088), (896, 23520), (960, 21952), (980, 21504), (1024, 20580), (1029, 20480), (1120, 18816), (1176, 17920), (1280, 16464), (1344, 15680), (1372, 15360), (1470, 14336), (1536, 13720), (1568, 13440), (1680, 12544), (1715, 12288), (1792, 11760), (1920, 10976), (1960, 10752), (2048, 10290), (2058, 10240), (2240, 9408), (2352, 8960), (2560, 8232), (2688, 7840), (2744, 7680), (2940, 7168), (3072, 6860), (3136, 6720), (3360, 6272), (3430, 6144), (3584, 5880), (3840, 5488), (3920, 5376), (4096, 5145), (4116, 5120), (4480, 4704)]