19916911

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{5399}}^1$

素因数の和:5454

約数の個数: 16

約数和(自身を含む): 24883200

約数和(自身を除く): 4966289

約数列:

[1, 7, 17, 31, 119, 217, 527, 3689, 5399, 37793, 91783, 167369, 642481, 1171583, 2845273, 19916911]

約数ペア:

[(1, 19916911), (7, 2845273), (17, 1171583), (31, 642481), (119, 167369), (217, 91783), (527, 37793), (3689, 5399)]