20191811

素因数分解:

${\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:290

約数の個数: 16

約数和(自身を含む): 21525504

約数和(自身を除く): 1333693

約数列:

[1, 43, 47, 97, 103, 2021, 4171, 4429, 4559, 4841, 9991, 196037, 208163, 429613, 469577, 20191811]

約数ペア:

[(1, 20191811), (43, 469577), (47, 429613), (97, 208163), (103, 196037), (2021, 9991), (4171, 4841), (4429, 4559)]