19577680

素因数分解:

$2^4\times 5^1\times {\mathrm{244721}}^1$

素因数の和:244734

約数の個数: 20

約数和(自身を含む): 45518292

約数和(自身を除く): 25940612

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 244721, 489442, 978884, 1223605, 1957768, 2447210, 3915536, 4894420, 9788840, 19577680]

約数ペア:

[(1, 19577680), (2, 9788840), (4, 4894420), (5, 3915536), (8, 2447210), (10, 1957768), (16, 1223605), (20, 978884), (40, 489442), (80, 244721)]