20518269

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{3691}}^1$

素因数の和:3820

約数の個数: 16

約数和(自身を含む): 29240640

約数和(自身を除く): 8722371

約数列:

[1, 3, 17, 51, 109, 327, 1853, 3691, 5559, 11073, 62747, 188241, 402319, 1206957, 6839423, 20518269]

約数ペア:

[(1, 20518269), (3, 6839423), (17, 1206957), (51, 402319), (109, 188241), (327, 62747), (1853, 11073), (3691, 5559)]