20565644

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{42491}}^1$

素因数の和:42517

約数の個数: 18

約数和(自身を含む): 39560052

約数和(自身を除く): 18994408

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 42491, 84982, 169964, 467401, 934802, 1869604, 5141411, 10282822, 20565644]

約数ペア:

[(1, 20565644), (2, 10282822), (4, 5141411), (11, 1869604), (22, 934802), (44, 467401), (121, 169964), (242, 84982), (484, 42491)]