18718521

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{233}}^1\times {\mathrm{439}}^1$

素因数の和:736

約数の個数: 16

約数和(自身を含む): 25534080

約数和(自身を除く): 6815559

約数列:

[1, 3, 61, 183, 233, 439, 699, 1317, 14213, 26779, 42639, 80337, 102287, 306861, 6239507, 18718521]

約数ペア:

[(1, 18718521), (3, 6239507), (61, 306861), (183, 102287), (233, 80337), (439, 42639), (699, 26779), (1317, 14213)]