20815768

素因数分解:

$2^3\times {\mathrm{1559}}^1\times {\mathrm{1669}}^1$

素因数の和:3234

約数の個数: 16

約数和(自身を含む): 39078000

約数和(自身を除く): 18262232

約数列:

[1, 2, 4, 8, 1559, 1669, 3118, 3338, 6236, 6676, 12472, 13352, 2601971, 5203942, 10407884, 20815768]

約数ペア:

[(1, 20815768), (2, 10407884), (4, 5203942), (8, 2601971), (1559, 13352), (1669, 12472), (3118, 6676), (3338, 6236)]