18720093

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{20731}}^1$

素因数の和:20784

約数の個数: 16

約数和(自身を含む): 29190656

約数和(自身を除く): 10470563

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 20731, 62193, 145117, 435351, 891433, 2674299, 6240031, 18720093]

約数ペア:

[(1, 18720093), (3, 6240031), (7, 2674299), (21, 891433), (43, 435351), (129, 145117), (301, 62193), (903, 20731)]