21692727

素因数分解:

$3^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{3343}}^1$

素因数の和:3459

約数の個数: 24

約数和(自身を含む): 36168704

約数和(自身を除く): 14475977

約数列:

[1, 3, 7, 9, 21, 63, 103, 309, 721, 927, 2163, 3343, 6489, 10029, 23401, 30087, 70203, 210609, 344329, 1032987, 2410303, 3098961, 7230909, 21692727]

約数ペア:

[(1, 21692727), (3, 7230909), (7, 3098961), (9, 2410303), (21, 1032987), (63, 344329), (103, 210609), (309, 70203), (721, 30087), (927, 23401), (2163, 10029), (3343, 6489)]