19909456

素因数分解:

$2^4\times 7^1\times {\mathrm{177763}}^1$

素因数の和:177778

約数の個数: 20

約数和(自身を含む): 44085472

約数和(自身を除く): 24176016

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 177763, 355526, 711052, 1244341, 1422104, 2488682, 2844208, 4977364, 9954728, 19909456]

約数ペア:

[(1, 19909456), (2, 9954728), (4, 4977364), (7, 2844208), (8, 2488682), (14, 1422104), (16, 1244341), (28, 711052), (56, 355526), (112, 177763)]