19813329

素因数分解:

$3^4\times {\mathrm{331}}^1\times {\mathrm{739}}^1$

素因数の和:1082

約数の個数: 20

約数和(自身を含む): 29727280

約数和(自身を除く): 9913951

約数列:

[1, 3, 9, 27, 81, 331, 739, 993, 2217, 2979, 6651, 8937, 19953, 26811, 59859, 244609, 733827, 2201481, 6604443, 19813329]

約数ペア:

[(1, 19813329), (3, 6604443), (9, 2201481), (27, 733827), (81, 244609), (331, 59859), (739, 26811), (993, 19953), (2217, 8937), (2979, 6651)]