21057828

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{5501}}^1$

素因数の和:5548

約数の個数: 48

約数和(自身を含む): 55460160

約数和(自身を除く): 34402332

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 29, 33, 44, 58, 66, 87, 116, 132, 174, 319, 348, 638, 957, 1276, 1914, 3828, 5501, 11002, 16503, 22004, 33006, 60511, 66012, 121022, 159529, 181533, 242044, 319058, 363066, 478587, 638116, 726132, 957174, 1754819, 1914348, 3509638, 5264457, 7019276, 10528914, 21057828]

約数ペア:

[(1, 21057828), (2, 10528914), (3, 7019276), (4, 5264457), (6, 3509638), (11, 1914348), (12, 1754819), (22, 957174), (29, 726132), (33, 638116), (44, 478587), (58, 363066), (66, 319058), (87, 242044), (116, 181533), (132, 159529), (174, 121022), (319, 66012), (348, 60511), (638, 33006), (957, 22004), (1276, 16503), (1914, 11002), (3828, 5501)]