20097021

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{30871}}^1$

素因数の和:30912

約数の個数: 16

約数和(自身を含む): 31612928

約数和(自身を除く): 11515907

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 30871, 92613, 216097, 648291, 957001, 2871003, 6699007, 20097021]

約数ペア:

[(1, 20097021), (3, 6699007), (7, 2871003), (21, 957001), (31, 648291), (93, 216097), (217, 92613), (651, 30871)]