80338220

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{65851}}^1$

素因数の和:65921

約数の個数: 24

約数和(自身を含む): 171478608

約数和(自身を除く): 91140388

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 65851, 131702, 263404, 329255, 658510, 1317020, 4016911, 8033822, 16067644, 20084555, 40169110, 80338220]

約数ペア:

[(1, 80338220), (2, 40169110), (4, 20084555), (5, 16067644), (10, 8033822), (20, 4016911), (61, 1317020), (122, 658510), (244, 329255), (305, 263404), (610, 131702), (1220, 65851)]