28216727

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{11821}}^1$

素因数の和:11870

約数の個数: 16

約数和(自身を含む): 36317184

約数和(自身を除く): 8100457

約数列:

[1, 7, 11, 31, 77, 217, 341, 2387, 11821, 82747, 130031, 366451, 910217, 2565157, 4030961, 28216727]

約数ペア:

[(1, 28216727), (7, 4030961), (11, 2565157), (31, 910217), (77, 366451), (217, 130031), (341, 82747), (2387, 11821)]