1991717

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{509}}^1$

素因数の和:572

約数の個数: 16

約数和(自身を含む): 2513280

約数和(自身を除く): 521563

約数列:

[1, 7, 13, 43, 91, 301, 509, 559, 3563, 3913, 6617, 21887, 46319, 153209, 284531, 1991717]

約数ペア:

[(1, 1991717), (7, 284531), (13, 153209), (43, 46319), (91, 21887), (301, 6617), (509, 3913), (559, 3563)]