199420405

素因数分解:

$5^1\times {\mathrm{109}}^1\times {\mathrm{239}}^1\times {\mathrm{1531}}^1$

素因数の和:1884

約数の個数: 16

約数和(自身を含む): 242668800

約数和(自身を除く): 43248395

約数列:

[1, 5, 109, 239, 545, 1195, 1531, 7655, 26051, 130255, 166879, 365909, 834395, 1829545, 39884081, 199420405]

約数ペア:

[(1, 199420405), (5, 39884081), (109, 1829545), (239, 834395), (545, 365909), (1195, 166879), (1531, 130255), (7655, 26051)]