19989321

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{1039}}^1$

素因数の和:1117

約数の個数: 24

約数和(自身を含む): 29877120

約数和(自身を除く): 9887799

約数列:

[1, 3, 11, 33, 53, 121, 159, 363, 583, 1039, 1749, 3117, 6413, 11429, 19239, 34287, 55067, 125719, 165201, 377157, 605737, 1817211, 6663107, 19989321]

約数ペア:

[(1, 19989321), (3, 6663107), (11, 1817211), (33, 605737), (53, 377157), (121, 165201), (159, 125719), (363, 55067), (583, 34287), (1039, 19239), (1749, 11429), (3117, 6413)]