20997482009

素因数分解:

$7^2\times {\mathrm{6673}}^1\times {\mathrm{64217}}^1$

素因数の和:70904

約数の個数: 12

約数和(自身を含む): 24429683124

約数和(自身を除く): 3432201115

約数列:

[1, 7, 49, 6673, 46711, 64217, 326977, 449519, 3146633, 428520041, 2999640287, 20997482009]

約数ペア:

[(1, 20997482009), (7, 2999640287), (49, 428520041), (6673, 3146633), (46711, 449519), (64217, 326977)]