21749273

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{827}}^1$

素因数の和:881

約数の個数: 24

約数和(自身を含む): 28469952

約数和(自身を除く): 6720679

約数列:

[1, 7, 13, 17, 91, 119, 221, 289, 827, 1547, 2023, 3757, 5789, 10751, 14059, 26299, 75257, 98413, 182767, 239003, 1279369, 1673021, 3107039, 21749273]

約数ペア:

[(1, 21749273), (7, 3107039), (13, 1673021), (17, 1279369), (91, 239003), (119, 182767), (221, 98413), (289, 75257), (827, 26299), (1547, 14059), (2023, 10751), (3757, 5789)]