18278281

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{269}}^1\times {\mathrm{571}}^1$

素因数の和:864

約数の個数: 16

約数和(自身を含む): 22239360

約数和(自身を除く): 3961079

約数列:

[1, 7, 17, 119, 269, 571, 1883, 3997, 4573, 9707, 32011, 67949, 153599, 1075193, 2611183, 18278281]

約数ペア:

[(1, 18278281), (7, 2611183), (17, 1075193), (119, 153599), (269, 67949), (571, 32011), (1883, 9707), (3997, 4573)]