858016820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2257939}}^1$

素因数の和:2257967

約数の個数: 24

約数和(自身を含む): 1896669600

約数和(自身を除く): 1038652780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 2257939, 4515878, 9031756, 11289695, 22579390, 42900841, 45158780, 85801682, 171603364, 214504205, 429008410, 858016820]

約数ペア:

[(1, 858016820), (2, 429008410), (4, 214504205), (5, 171603364), (10, 85801682), (19, 45158780), (20, 42900841), (38, 22579390), (76, 11289695), (95, 9031756), (190, 4515878), (380, 2257939)]