20488554

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{257}}^1$

素因数の和:411

約数の個数: 48

約数和(自身を含む): 46043712

約数和(自身を除く): 25555158

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 103, 129, 206, 257, 258, 309, 387, 514, 618, 771, 774, 927, 1542, 1854, 2313, 4429, 4626, 8858, 11051, 13287, 22102, 26471, 26574, 33153, 39861, 52942, 66306, 79413, 79722, 99459, 158826, 198918, 238239, 476478, 1138253, 2276506, 3414759, 6829518, 10244277, 20488554]

約数ペア:

[(1, 20488554), (2, 10244277), (3, 6829518), (6, 3414759), (9, 2276506), (18, 1138253), (43, 476478), (86, 238239), (103, 198918), (129, 158826), (206, 99459), (257, 79722), (258, 79413), (309, 66306), (387, 52942), (514, 39861), (618, 33153), (771, 26574), (774, 26471), (927, 22102), (1542, 13287), (1854, 11051), (2313, 8858), (4429, 4626)]