19889485

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2719}}^1$

素因数の和:2761

約数の個数: 32

約数和(自身を含む): 31334400

約数和(自身を除く): 11444915

約数列:

[1, 5, 7, 11, 19, 35, 55, 77, 95, 133, 209, 385, 665, 1045, 1463, 2719, 7315, 13595, 19033, 29909, 51661, 95165, 149545, 209363, 258305, 361627, 568271, 1046815, 1808135, 2841355, 3977897, 19889485]

約数ペア:

[(1, 19889485), (5, 3977897), (7, 2841355), (11, 1808135), (19, 1046815), (35, 568271), (55, 361627), (77, 258305), (95, 209363), (133, 149545), (209, 95165), (385, 51661), (665, 29909), (1045, 19033), (1463, 13595), (2719, 7315)]