20747881

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{4567}}^1$

素因数の和:4644

約数の個数: 16

約数和(自身を含む): 26311680

約数和(自身を除く): 5563799

約数列:

[1, 7, 11, 59, 77, 413, 649, 4543, 4567, 31969, 50237, 269453, 351659, 1886171, 2963983, 20747881]

約数ペア:

[(1, 20747881), (7, 2963983), (11, 1886171), (59, 351659), (77, 269453), (413, 50237), (649, 31969), (4543, 4567)]