20289805

素因数分解:

$5^1\times {\mathrm{59}}^1\times {\mathrm{109}}^1\times {\mathrm{631}}^1$

素因数の和:804

約数の個数: 16

約数和(自身を含む): 25027200

約数和(自身を除く): 4737395

約数列:

[1, 5, 59, 109, 295, 545, 631, 3155, 6431, 32155, 37229, 68779, 186145, 343895, 4057961, 20289805]

約数ペア:

[(1, 20289805), (5, 4057961), (59, 343895), (109, 186145), (295, 68779), (545, 37229), (631, 32155), (3155, 6431)]