21541968

素因数分解:

$2^4\times 3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:142

約数の個数: 180

約数和(自身を含む): 72772128

約数和(自身を除く): 51230160

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 42, 43, 48, 49, 56, 63, 71, 72, 84, 86, 98, 112, 126, 129, 142, 144, 147, 168, 172, 196, 213, 252, 258, 284, 294, 301, 336, 344, 387, 392, 426, 441, 497, 504, 516, 568, 588, 602, 639, 688, 774, 784, 852, 882, 903, 994, 1008, 1032, 1136, 1176, 1204, 1278, 1491, 1548, 1704, 1764, 1806, 1988, 2064, 2107, 2352, 2408, 2556, 2709, 2982, 3053, 3096, 3408, 3479, 3528, 3612, 3976, 4214, 4473, 4816, 5112, 5418, 5964, 6106, 6192, 6321, 6958, 7056, 7224, 7952, 8428, 8946, 9159, 10224, 10437, 10836, 11928, 12212, 12642, 13916, 14448, 16856, 17892, 18318, 18963, 20874, 21371, 21672, 23856, 24424, 25284, 27477, 27832, 31311, 33712, 35784, 36636, 37926, 41748, 42742, 43344, 48848, 50568, 54954, 55664, 62622, 64113, 71568, 73272, 75852, 83496, 85484, 101136, 109908, 125244, 128226, 146544, 149597, 151704, 166992, 170968, 192339, 219816, 250488, 256452, 299194, 303408, 341936, 384678, 439632, 448791, 500976, 512904, 598388, 769356, 897582, 1025808, 1196776, 1346373, 1538712, 1795164, 2393552, 2692746, 3077424, 3590328, 5385492, 7180656, 10770984, 21541968]

約数ペア:

[(1, 21541968), (2, 10770984), (3, 7180656), (4, 5385492), (6, 3590328), (7, 3077424), (8, 2692746), (9, 2393552), (12, 1795164), (14, 1538712), (16, 1346373), (18, 1196776), (21, 1025808), (24, 897582), (28, 769356), (36, 598388), (42, 512904), (43, 500976), (48, 448791), (49, 439632), (56, 384678), (63, 341936), (71, 303408), (72, 299194), (84, 256452), (86, 250488), (98, 219816), (112, 192339), (126, 170968), (129, 166992), (142, 151704), (144, 149597), (147, 146544), (168, 128226), (172, 125244), (196, 109908), (213, 101136), (252, 85484), (258, 83496), (284, 75852), (294, 73272), (301, 71568), (336, 64113), (344, 62622), (387, 55664), (392, 54954), (426, 50568), (441, 48848), (497, 43344), (504, 42742), (516, 41748), (568, 37926), (588, 36636), (602, 35784), (639, 33712), (688, 31311), (774, 27832), (784, 27477), (852, 25284), (882, 24424), (903, 23856), (994, 21672), (1008, 21371), (1032, 20874), (1136, 18963), (1176, 18318), (1204, 17892), (1278, 16856), (1491, 14448), (1548, 13916), (1704, 12642), (1764, 12212), (1806, 11928), (1988, 10836), (2064, 10437), (2107, 10224), (2352, 9159), (2408, 8946), (2556, 8428), (2709, 7952), (2982, 7224), (3053, 7056), (3096, 6958), (3408, 6321), (3479, 6192), (3528, 6106), (3612, 5964), (3976, 5418), (4214, 5112), (4473, 4816)]