20003991

素因数分解:

$3^1\times 7^1\times {\mathrm{739}}^1\times {\mathrm{1289}}^1$

素因数の和:2038

約数の個数: 16

約数和(自身を含む): 30547200

約数和(自身を除く): 10543209

約数列:

[1, 3, 7, 21, 739, 1289, 2217, 3867, 5173, 9023, 15519, 27069, 952571, 2857713, 6667997, 20003991]

約数ペア:

[(1, 20003991), (3, 6667997), (7, 2857713), (21, 952571), (739, 27069), (1289, 15519), (2217, 9023), (3867, 5173)]