21307239

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{761}}^1$

素因数の和:848

約数の個数: 32

約数和(自身を含む): 34015680

約数和(自身を除く): 12708441

約数列:

[1, 3, 9, 17, 27, 51, 61, 153, 183, 459, 549, 761, 1037, 1647, 2283, 3111, 6849, 9333, 12937, 20547, 27999, 38811, 46421, 116433, 139263, 349299, 417789, 789157, 1253367, 2367471, 7102413, 21307239]

約数ペア:

[(1, 21307239), (3, 7102413), (9, 2367471), (17, 1253367), (27, 789157), (51, 417789), (61, 349299), (153, 139263), (183, 116433), (459, 46421), (549, 38811), (761, 27999), (1037, 20547), (1647, 12937), (2283, 9333), (3111, 6849)]