21040287

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{211}}^1\times {\mathrm{773}}^1$

素因数の和:1030

約数の個数: 16

約数和(自身を含む): 28879488

約数和(自身を除く): 7839201

約数列:

[1, 3, 43, 129, 211, 633, 773, 2319, 9073, 27219, 33239, 99717, 163103, 489309, 7013429, 21040287]

約数ペア:

[(1, 21040287), (3, 7013429), (43, 489309), (129, 163103), (211, 99717), (633, 33239), (773, 27219), (2319, 9073)]