21690111

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{59}}^2\times {\mathrm{67}}^1$

素因数の和:219

約数の個数: 24

約数和(自身を含む): 30820864

約数和(自身を除く): 9130753

約数列:

[1, 3, 31, 59, 67, 93, 177, 201, 1829, 2077, 3481, 3953, 5487, 6231, 10443, 11859, 107911, 122543, 233227, 323733, 367629, 699681, 7230037, 21690111]

約数ペア:

[(1, 21690111), (3, 7230037), (31, 699681), (59, 367629), (67, 323733), (93, 233227), (177, 122543), (201, 107911), (1829, 11859), (2077, 10443), (3481, 6231), (3953, 5487)]