20710361721

素因数分解:

$3^1\times 7^1\times {\mathrm{7237}}^1\times {\mathrm{136273}}^1$

素因数の和:143520

約数の個数: 16

約数和(自身を含む): 31563238784

約数和(自身を除く): 10852877063

約数列:

[1, 3, 7, 21, 7237, 21711, 50659, 136273, 151977, 408819, 953911, 2861733, 986207701, 2958623103, 6903453907, 20710361721]

約数ペア:

[(1, 20710361721), (3, 6903453907), (7, 2958623103), (21, 986207701), (7237, 2861733), (21711, 953911), (50659, 408819), (136273, 151977)]