20817181

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{5101}}^1$

素因数の和:5172

約数の個数: 16

約数和(自身を含む): 26448768

約数和(自身を除く): 5631587

約数列:

[1, 7, 11, 53, 77, 371, 583, 4081, 5101, 35707, 56111, 270353, 392777, 1892471, 2973883, 20817181]

約数ペア:

[(1, 20817181), (7, 2973883), (11, 1892471), (53, 392777), (77, 270353), (371, 56111), (583, 35707), (4081, 5101)]