18929215

素因数分解:

$5^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{1171}}^1$

素因数の和:1290

約数の個数: 16

約数和(自身を含む): 23543136

約数和(自身を除く): 4613921

約数列:

[1, 5, 53, 61, 265, 305, 1171, 3233, 5855, 16165, 62063, 71431, 310315, 357155, 3785843, 18929215]

約数ペア:

[(1, 18929215), (5, 3785843), (53, 357155), (61, 310315), (265, 71431), (305, 62063), (1171, 16165), (3233, 5855)]