21080752

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{241}}^1$

素因数の和:338

約数の個数: 80

約数和(自身を含む): 51853824

約数和(自身を除く): 30773072

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 71, 77, 88, 112, 142, 154, 176, 241, 284, 308, 482, 497, 568, 616, 781, 964, 994, 1136, 1232, 1562, 1687, 1928, 1988, 2651, 3124, 3374, 3856, 3976, 5302, 5467, 6248, 6748, 7952, 10604, 10934, 12496, 13496, 17111, 18557, 21208, 21868, 26992, 34222, 37114, 42416, 43736, 68444, 74228, 87472, 119777, 136888, 148456, 188221, 239554, 273776, 296912, 376442, 479108, 752884, 958216, 1317547, 1505768, 1916432, 2635094, 3011536, 5270188, 10540376, 21080752]

約数ペア:

[(1, 21080752), (2, 10540376), (4, 5270188), (7, 3011536), (8, 2635094), (11, 1916432), (14, 1505768), (16, 1317547), (22, 958216), (28, 752884), (44, 479108), (56, 376442), (71, 296912), (77, 273776), (88, 239554), (112, 188221), (142, 148456), (154, 136888), (176, 119777), (241, 87472), (284, 74228), (308, 68444), (482, 43736), (497, 42416), (568, 37114), (616, 34222), (781, 26992), (964, 21868), (994, 21208), (1136, 18557), (1232, 17111), (1562, 13496), (1687, 12496), (1928, 10934), (1988, 10604), (2651, 7952), (3124, 6748), (3374, 6248), (3856, 5467), (3976, 5302)]