20289507

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{22469}}^1$

素因数の和:22522

約数の個数: 16

約数和(自身を含む): 31637760

約数和(自身を除く): 11348253

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 22469, 67407, 157283, 471849, 966167, 2898501, 6763169, 20289507]

約数ペア:

[(1, 20289507), (3, 6763169), (7, 2898501), (21, 966167), (43, 471849), (129, 157283), (301, 67407), (903, 22469)]