18221427

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{7817}}^1$

素因数の和:7867

約数の個数: 24

約数和(自身を含む): 30896736

約数和(自身を除く): 12675309

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 777, 2331, 7817, 23451, 54719, 70353, 164157, 289229, 492471, 867687, 2024603, 2603061, 6073809, 18221427]

約数ペア:

[(1, 18221427), (3, 6073809), (7, 2603061), (9, 2024603), (21, 867687), (37, 492471), (63, 289229), (111, 164157), (259, 70353), (333, 54719), (777, 23451), (2331, 7817)]