21162856

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{1423}}^1$

素因数の和:1466

約数の個数: 48

約数和(自身を含む): 46906560

約数和(自身を除く): 25743704

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 169, 286, 338, 572, 676, 1144, 1352, 1423, 1859, 2846, 3718, 5692, 7436, 11384, 14872, 15653, 18499, 31306, 36998, 62612, 73996, 125224, 147992, 203489, 240487, 406978, 480974, 813956, 961948, 1627912, 1923896, 2645357, 5290714, 10581428, 21162856]

約数ペア:

[(1, 21162856), (2, 10581428), (4, 5290714), (8, 2645357), (11, 1923896), (13, 1627912), (22, 961948), (26, 813956), (44, 480974), (52, 406978), (88, 240487), (104, 203489), (143, 147992), (169, 125224), (286, 73996), (338, 62612), (572, 36998), (676, 31306), (1144, 18499), (1352, 15653), (1423, 14872), (1859, 11384), (2846, 7436), (3718, 5692)]