20109724

素因数分解:

$2^2\times {\mathrm{43}}^2\times {\mathrm{2719}}^1$

素因数の和:2809

約数の個数: 18

約数和(自身を含む): 36042720

約数和(自身を除く): 15932996

約数列:

[1, 2, 4, 43, 86, 172, 1849, 2719, 3698, 5438, 7396, 10876, 116917, 233834, 467668, 5027431, 10054862, 20109724]

約数ペア:

[(1, 20109724), (2, 10054862), (4, 5027431), (43, 467668), (86, 233834), (172, 116917), (1849, 10876), (2719, 7396), (3698, 5438)]