20542291

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{79}}^1\times {\mathrm{307}}^1$

素因数の和:415

約数の個数: 24

約数和(自身を含む): 26216960

約数和(自身を除く): 5674669

約数列:

[1, 7, 11, 77, 79, 121, 307, 553, 847, 869, 2149, 3377, 6083, 9559, 23639, 24253, 37147, 66913, 169771, 260029, 266783, 1867481, 2934613, 20542291]

約数ペア:

[(1, 20542291), (7, 2934613), (11, 1867481), (77, 266783), (79, 260029), (121, 169771), (307, 66913), (553, 37147), (847, 24253), (869, 23639), (2149, 9559), (3377, 6083)]