18616213

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{709}}^1$

素因数の和:769

約数の個数: 24

約数和(自身を含む): 24174080

約数和(自身を除く): 5557867

約数列:

[1, 7, 11, 31, 77, 121, 217, 341, 709, 847, 2387, 3751, 4963, 7799, 21979, 26257, 54593, 85789, 153853, 241769, 600523, 1692383, 2659459, 18616213]

約数ペア:

[(1, 18616213), (7, 2659459), (11, 1692383), (31, 600523), (77, 241769), (121, 153853), (217, 85789), (341, 54593), (709, 26257), (847, 21979), (2387, 7799), (3751, 4963)]