21801871

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{829}}^1$

素因数の和:883

約数の個数: 24

約数和(自身を含む): 28538720

約数和(自身を除く): 6736849

約数列:

[1, 7, 13, 17, 91, 119, 221, 289, 829, 1547, 2023, 3757, 5803, 10777, 14093, 26299, 75439, 98651, 183209, 239581, 1282463, 1677067, 3114553, 21801871]

約数ペア:

[(1, 21801871), (7, 3114553), (13, 1677067), (17, 1282463), (91, 239581), (119, 183209), (221, 98651), (289, 75439), (829, 26299), (1547, 14093), (2023, 10777), (3757, 5803)]