21033992961

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{54351403}}^1$

素因数の和:54351452

約数の個数: 12

約数和(自身を含む): 31089003088

約数和(自身を除く): 10055010127

約数列:

[1, 3, 9, 43, 129, 387, 54351403, 163054209, 489162627, 2337110329, 7011330987, 21033992961]

約数ペア:

[(1, 21033992961), (3, 7011330987), (9, 2337110329), (43, 489162627), (129, 163054209), (387, 54351403)]