20353684

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{30109}}^1$

素因数の和:30139

約数の個数: 18

約数和(自身を含む): 38570910

約数和(自身を除く): 18217226

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 30109, 60218, 120436, 391417, 782834, 1565668, 5088421, 10176842, 20353684]

約数ペア:

[(1, 20353684), (2, 10176842), (4, 5088421), (13, 1565668), (26, 782834), (52, 391417), (169, 120436), (338, 60218), (676, 30109)]