19983020

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{13687}}^1$

素因数の和:13769

約数の個数: 24

約数和(自身を含む): 42542304

約数和(自身を除く): 22559284

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 13687, 27374, 54748, 68435, 136870, 273740, 999151, 1998302, 3996604, 4995755, 9991510, 19983020]

約数ペア:

[(1, 19983020), (2, 9991510), (4, 4995755), (5, 3996604), (10, 1998302), (20, 999151), (73, 273740), (146, 136870), (292, 68435), (365, 54748), (730, 27374), (1460, 13687)]