20011779

素因数分解:

$3^6\times {\mathrm{97}}^1\times {\mathrm{283}}^1$

素因数の和:398

約数の個数: 28

約数和(自身を含む): 30420376

約数和(自身を除く): 10408597

約数列:

[1, 3, 9, 27, 81, 97, 243, 283, 291, 729, 849, 873, 2547, 2619, 7641, 7857, 22923, 23571, 27451, 68769, 70713, 82353, 206307, 247059, 741177, 2223531, 6670593, 20011779]

約数ペア:

[(1, 20011779), (3, 6670593), (9, 2223531), (27, 741177), (81, 247059), (97, 206307), (243, 82353), (283, 70713), (291, 68769), (729, 27451), (849, 23571), (873, 22923), (2547, 7857), (2619, 7641)]