17981439

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{19913}}^1$

素因数の和:19966

約数の個数: 16

約数和(自身を含む): 28038912

約数和(自身を除く): 10057473

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 19913, 59739, 139391, 418173, 856259, 2568777, 5993813, 17981439]

約数ペア:

[(1, 17981439), (3, 5993813), (7, 2568777), (21, 856259), (43, 418173), (129, 139391), (301, 59739), (903, 19913)]