21220617

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{1103}}^1$

素因数の和:1181

約数の個数: 24

約数和(自身を含む): 31715712

約数和(自身を除く): 10495095

約数列:

[1, 3, 11, 33, 53, 121, 159, 363, 583, 1103, 1749, 3309, 6413, 12133, 19239, 36399, 58459, 133463, 175377, 400389, 643049, 1929147, 7073539, 21220617]

約数ペア:

[(1, 21220617), (3, 7073539), (11, 1929147), (33, 643049), (53, 400389), (121, 175377), (159, 133463), (363, 58459), (583, 36399), (1103, 19239), (1749, 12133), (3309, 6413)]