21342939

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{103}}^1\times {\mathrm{239}}^1$

素因数の和:379

約数の個数: 24

約数和(自身を含む): 30650880

約数和(自身を除く): 9307941

約数列:

[1, 3, 17, 51, 103, 239, 289, 309, 717, 867, 1751, 4063, 5253, 12189, 24617, 29767, 69071, 73851, 89301, 207213, 418489, 1255467, 7114313, 21342939]

約数ペア:

[(1, 21342939), (3, 7114313), (17, 1255467), (51, 418489), (103, 207213), (239, 89301), (289, 73851), (309, 69071), (717, 29767), (867, 24617), (1751, 12189), (4063, 5253)]