21780279

素因数分解:

$3^3\times {\mathrm{83}}^1\times {\mathrm{9719}}^1$

素因数の和:9811

約数の個数: 16

約数和(自身を含む): 32659200

約数和(自身を除く): 10878921

約数列:

[1, 3, 9, 27, 83, 249, 747, 2241, 9719, 29157, 87471, 262413, 806677, 2420031, 7260093, 21780279]

約数ペア:

[(1, 21780279), (3, 7260093), (9, 2420031), (27, 806677), (83, 262413), (249, 87471), (747, 29157), (2241, 9719)]