19570640

素因数分解:

$2^4\times 5^1\times {\mathrm{244633}}^1$

素因数の和:244646

約数の個数: 20

約数和(自身を含む): 45501924

約数和(自身を除く): 25931284

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 244633, 489266, 978532, 1223165, 1957064, 2446330, 3914128, 4892660, 9785320, 19570640]

約数ペア:

[(1, 19570640), (2, 9785320), (4, 4892660), (5, 3914128), (8, 2446330), (10, 1957064), (16, 1223165), (20, 978532), (40, 489266), (80, 244633)]