18821438209

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1993163}}^1$

素因数の和:1993260

約数の個数: 16

約数和(自身を含む): 22961249280

約数和(自身を除く): 4139811071

約数列:

[1, 7, 19, 71, 133, 497, 1349, 9443, 1993163, 13952141, 37870097, 141514573, 265090679, 990602011, 2688776887, 18821438209]

約数ペア:

[(1, 18821438209), (7, 2688776887), (19, 990602011), (71, 265090679), (133, 141514573), (497, 37870097), (1349, 13952141), (9443, 1993163)]