20831888

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{457}}^1$

素因数の和:520

約数の個数: 80

約数和(自身を含む): 51794304

約数和(自身を除く): 30962416

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 37, 44, 56, 74, 77, 88, 112, 148, 154, 176, 259, 296, 308, 407, 457, 518, 592, 616, 814, 914, 1036, 1232, 1628, 1828, 2072, 2849, 3199, 3256, 3656, 4144, 5027, 5698, 6398, 6512, 7312, 10054, 11396, 12796, 16909, 20108, 22792, 25592, 33818, 35189, 40216, 45584, 51184, 67636, 70378, 80432, 118363, 135272, 140756, 185999, 236726, 270544, 281512, 371998, 473452, 563024, 743996, 946904, 1301993, 1487992, 1893808, 2603986, 2975984, 5207972, 10415944, 20831888]

約数ペア:

[(1, 20831888), (2, 10415944), (4, 5207972), (7, 2975984), (8, 2603986), (11, 1893808), (14, 1487992), (16, 1301993), (22, 946904), (28, 743996), (37, 563024), (44, 473452), (56, 371998), (74, 281512), (77, 270544), (88, 236726), (112, 185999), (148, 140756), (154, 135272), (176, 118363), (259, 80432), (296, 70378), (308, 67636), (407, 51184), (457, 45584), (518, 40216), (592, 35189), (616, 33818), (814, 25592), (914, 22792), (1036, 20108), (1232, 16909), (1628, 12796), (1828, 11396), (2072, 10054), (2849, 7312), (3199, 6512), (3256, 6398), (3656, 5698), (4144, 5027)]