18791423

素因数分解:

$7^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1\times {\mathrm{389}}^1$

素因数の和:566

約数の個数: 16

約数和(自身を含む): 22064640

約数和(自身を除く): 3273217

約数列:

[1, 7, 67, 103, 389, 469, 721, 2723, 6901, 26063, 40067, 48307, 182441, 280469, 2684489, 18791423]

約数ペア:

[(1, 18791423), (7, 2684489), (67, 280469), (103, 182441), (389, 48307), (469, 40067), (721, 26063), (2723, 6901)]