21216969

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{1373}}^1$

素因数の和:1497

約数の個数: 24

約数和(自身を含む): 32794632

約数和(自身を除く): 11577663

約数列:

[1, 3, 9, 17, 51, 101, 153, 303, 909, 1373, 1717, 4119, 5151, 12357, 15453, 23341, 70023, 138673, 210069, 416019, 1248057, 2357441, 7072323, 21216969]

約数ペア:

[(1, 21216969), (3, 7072323), (9, 2357441), (17, 1248057), (51, 416019), (101, 210069), (153, 138673), (303, 70023), (909, 23341), (1373, 15453), (1717, 12357), (4119, 5151)]