21077760

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{499}}^1$

素因数の和:534

約数の個数: 144

約数和(自身を含む): 73584000

約数和(自身を除く): 52506240

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 32, 33, 40, 44, 48, 55, 60, 64, 66, 80, 88, 96, 110, 120, 128, 132, 160, 165, 176, 192, 220, 240, 256, 264, 320, 330, 352, 384, 440, 480, 499, 528, 640, 660, 704, 768, 880, 960, 998, 1056, 1280, 1320, 1408, 1497, 1760, 1920, 1996, 2112, 2495, 2640, 2816, 2994, 3520, 3840, 3992, 4224, 4990, 5280, 5489, 5988, 7040, 7485, 7984, 8448, 9980, 10560, 10978, 11976, 14080, 14970, 15968, 16467, 19960, 21120, 21956, 23952, 27445, 29940, 31936, 32934, 39920, 42240, 43912, 47904, 54890, 59880, 63872, 65868, 79840, 82335, 87824, 95808, 109780, 119760, 127744, 131736, 159680, 164670, 175648, 191616, 219560, 239520, 263472, 319360, 329340, 351296, 383232, 439120, 479040, 526944, 638720, 658680, 702592, 878240, 958080, 1053888, 1317360, 1405184, 1756480, 1916160, 2107776, 2634720, 3512960, 4215552, 5269440, 7025920, 10538880, 21077760]

約数ペア:

[(1, 21077760), (2, 10538880), (3, 7025920), (4, 5269440), (5, 4215552), (6, 3512960), (8, 2634720), (10, 2107776), (11, 1916160), (12, 1756480), (15, 1405184), (16, 1317360), (20, 1053888), (22, 958080), (24, 878240), (30, 702592), (32, 658680), (33, 638720), (40, 526944), (44, 479040), (48, 439120), (55, 383232), (60, 351296), (64, 329340), (66, 319360), (80, 263472), (88, 239520), (96, 219560), (110, 191616), (120, 175648), (128, 164670), (132, 159680), (160, 131736), (165, 127744), (176, 119760), (192, 109780), (220, 95808), (240, 87824), (256, 82335), (264, 79840), (320, 65868), (330, 63872), (352, 59880), (384, 54890), (440, 47904), (480, 43912), (499, 42240), (528, 39920), (640, 32934), (660, 31936), (704, 29940), (768, 27445), (880, 23952), (960, 21956), (998, 21120), (1056, 19960), (1280, 16467), (1320, 15968), (1408, 14970), (1497, 14080), (1760, 11976), (1920, 10978), (1996, 10560), (2112, 9980), (2495, 8448), (2640, 7984), (2816, 7485), (2994, 7040), (3520, 5988), (3840, 5489), (3992, 5280), (4224, 4990)]