20418279

素因数分解:

$3^1\times 7^1\times {\mathrm{503}}^1\times {\mathrm{1933}}^1$

素因数の和:2446

約数の個数: 16

約数和(自身を含む): 31191552

約数和(自身を除く): 10773273

約数列:

[1, 3, 7, 21, 503, 1509, 1933, 3521, 5799, 10563, 13531, 40593, 972299, 2916897, 6806093, 20418279]

約数ペア:

[(1, 20418279), (3, 6806093), (7, 2916897), (21, 972299), (503, 40593), (1509, 13531), (1933, 10563), (3521, 5799)]