18720044

素因数分解:

$2^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{6491}}^1$

素因数の和:6605

約数の個数: 24

約数和(自身を含む): 37809408

約数和(自身を除く): 19089364

約数列:

[1, 2, 4, 7, 14, 28, 103, 206, 412, 721, 1442, 2884, 6491, 12982, 25964, 45437, 90874, 181748, 668573, 1337146, 2674292, 4680011, 9360022, 18720044]

約数ペア:

[(1, 18720044), (2, 9360022), (4, 4680011), (7, 2674292), (14, 1337146), (28, 668573), (103, 181748), (206, 90874), (412, 45437), (721, 25964), (1442, 12982), (2884, 6491)]