21078127

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1\times {\mathrm{293}}^1$

素因数の和:582

約数の個数: 16

約数和(自身を含む): 24837120

約数和(自身を除く): 3758993

約数列:

[1, 7, 43, 239, 293, 301, 1673, 2051, 10277, 12599, 70027, 71939, 88193, 490189, 3011161, 21078127]

約数ペア:

[(1, 21078127), (7, 3011161), (43, 490189), (239, 88193), (293, 71939), (301, 70027), (1673, 12599), (2051, 10277)]