20975108

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{151}}^1$

素因数の和:225

約数の個数: 72

約数和(自身を含む): 47548032

約数和(自身を除く): 26572924

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 41, 44, 77, 82, 121, 151, 154, 164, 242, 287, 302, 308, 451, 484, 574, 604, 847, 902, 1057, 1148, 1661, 1694, 1804, 2114, 3157, 3322, 3388, 4228, 4961, 6191, 6314, 6644, 9922, 11627, 12382, 12628, 18271, 19844, 23254, 24764, 34727, 36542, 43337, 46508, 68101, 69454, 73084, 86674, 127897, 136202, 138908, 173348, 255794, 272404, 476707, 511588, 749111, 953414, 1498222, 1906828, 2996444, 5243777, 10487554, 20975108]

約数ペア:

[(1, 20975108), (2, 10487554), (4, 5243777), (7, 2996444), (11, 1906828), (14, 1498222), (22, 953414), (28, 749111), (41, 511588), (44, 476707), (77, 272404), (82, 255794), (121, 173348), (151, 138908), (154, 136202), (164, 127897), (242, 86674), (287, 73084), (302, 69454), (308, 68101), (451, 46508), (484, 43337), (574, 36542), (604, 34727), (847, 24764), (902, 23254), (1057, 19844), (1148, 18271), (1661, 12628), (1694, 12382), (1804, 11627), (2114, 9922), (3157, 6644), (3322, 6314), (3388, 6191), (4228, 4961)]