20951903

素因数分解:

$7^1\times {\mathrm{59}}^1\times {\mathrm{97}}^1\times {\mathrm{523}}^1$

素因数の和:686

約数の個数: 16

約数和(自身を含む): 24648960

約数和(自身を除く): 3697057

約数列:

[1, 7, 59, 97, 413, 523, 679, 3661, 5723, 30857, 40061, 50731, 215999, 355117, 2993129, 20951903]

約数ペア:

[(1, 20951903), (7, 2993129), (59, 355117), (97, 215999), (413, 50731), (523, 40061), (679, 30857), (3661, 5723)]