20918259

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{821}}^1$

素因数の和:995

約数の個数: 24

約数和(自身を含む): 32058000

約数和(自身を除く): 11139741

約数列:

[1, 3, 9, 19, 57, 149, 171, 447, 821, 1341, 2463, 2831, 7389, 8493, 15599, 25479, 46797, 122329, 140391, 366987, 1100961, 2324251, 6972753, 20918259]

約数ペア:

[(1, 20918259), (3, 6972753), (9, 2324251), (19, 1100961), (57, 366987), (149, 140391), (171, 122329), (447, 46797), (821, 25479), (1341, 15599), (2463, 8493), (2831, 7389)]