20007771

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{22157}}^1$

素因数の和:22210

約数の個数: 16

約数和(自身を含む): 31198464

約数和(自身を除く): 11190693

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 22157, 66471, 155099, 465297, 952751, 2858253, 6669257, 20007771]

約数ペア:

[(1, 20007771), (3, 6669257), (7, 2858253), (21, 952751), (43, 465297), (129, 155099), (301, 66471), (903, 22157)]