21387238576

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{121518401}}^1$

素因数の和:121518420

約数の個数: 20

約数和(自身を含む): 45204845544

約数和(自身を除く): 23817606968

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 121518401, 243036802, 486073604, 972147208, 1336702411, 1944294416, 2673404822, 5346809644, 10693619288, 21387238576]

約数ペア:

[(1, 21387238576), (2, 10693619288), (4, 5346809644), (8, 2673404822), (11, 1944294416), (16, 1336702411), (22, 972147208), (44, 486073604), (88, 243036802), (176, 121518401)]