21987715

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{1861}}^1$

素因数の和:2022

約数の個数: 16

約数和(自身を含む): 28153440

約数和(自身を除く): 6165725

約数列:

[1, 5, 17, 85, 139, 695, 1861, 2363, 9305, 11815, 31637, 158185, 258679, 1293395, 4397543, 21987715]

約数ペア:

[(1, 21987715), (5, 4397543), (17, 1293395), (85, 258679), (139, 158185), (695, 31637), (1861, 11815), (2363, 9305)]