21162219

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{28559}}^1$

素因数の和:28594

約数の個数: 16

約数和(自身を含む): 31987200

約数和(自身を除く): 10824981

約数列:

[1, 3, 13, 19, 39, 57, 247, 741, 28559, 85677, 371267, 542621, 1113801, 1627863, 7054073, 21162219]

約数ペア:

[(1, 21162219), (3, 7054073), (13, 1627863), (19, 1113801), (39, 542621), (57, 371267), (247, 85677), (741, 28559)]