21380976

素因数分解:

$2^4\times 3^3\times {\mathrm{43}}^1\times {\mathrm{1151}}^1$

素因数の和:1211

約数の個数: 80

約数和(自身を含む): 62853120

約数和(自身を除く): 41472144

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 43, 48, 54, 72, 86, 108, 129, 144, 172, 216, 258, 344, 387, 432, 516, 688, 774, 1032, 1151, 1161, 1548, 2064, 2302, 2322, 3096, 3453, 4604, 4644, 6192, 6906, 9208, 9288, 10359, 13812, 18416, 18576, 20718, 27624, 31077, 41436, 49493, 55248, 62154, 82872, 98986, 124308, 148479, 165744, 197972, 248616, 296958, 395944, 445437, 497232, 593916, 791888, 890874, 1187832, 1336311, 1781748, 2375664, 2672622, 3563496, 5345244, 7126992, 10690488, 21380976]

約数ペア:

[(1, 21380976), (2, 10690488), (3, 7126992), (4, 5345244), (6, 3563496), (8, 2672622), (9, 2375664), (12, 1781748), (16, 1336311), (18, 1187832), (24, 890874), (27, 791888), (36, 593916), (43, 497232), (48, 445437), (54, 395944), (72, 296958), (86, 248616), (108, 197972), (129, 165744), (144, 148479), (172, 124308), (216, 98986), (258, 82872), (344, 62154), (387, 55248), (432, 49493), (516, 41436), (688, 31077), (774, 27624), (1032, 20718), (1151, 18576), (1161, 18416), (1548, 13812), (2064, 10359), (2302, 9288), (2322, 9208), (3096, 6906), (3453, 6192), (4604, 4644)]