201821618781

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{315839779}}^1$

素因数の和:315839856

約数の個数: 12

約数和(自身を含む): 295626034080

約数和(自身を除く): 93804415299

約数列:

[1, 3, 9, 71, 213, 639, 315839779, 947519337, 2842558011, 22424624309, 67273872927, 201821618781]

約数ペア:

[(1, 201821618781), (3, 67273872927), (9, 22424624309), (71, 2842558011), (213, 947519337), (639, 315839779)]