20070220

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{16451}}^1$

素因数の和:16521

約数の個数: 24

約数和(自身を含む): 42841008

約数和(自身を除く): 22770788

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 16451, 32902, 65804, 82255, 164510, 329020, 1003511, 2007022, 4014044, 5017555, 10035110, 20070220]

約数ペア:

[(1, 20070220), (2, 10035110), (4, 5017555), (5, 4014044), (10, 2007022), (20, 1003511), (61, 329020), (122, 164510), (244, 82255), (305, 65804), (610, 32902), (1220, 16451)]