28191317

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{271}}^1$

素因数の和:489

約数の個数: 24

約数和(自身を含む): 36093312

約数和(自身を除く): 7901995

約数列:

[1, 7, 11, 49, 77, 193, 271, 539, 1351, 1897, 2123, 2981, 9457, 13279, 14861, 20867, 52303, 104027, 146069, 366121, 575333, 2562847, 4027331, 28191317]

約数ペア:

[(1, 28191317), (7, 4027331), (11, 2562847), (49, 575333), (77, 366121), (193, 146069), (271, 104027), (539, 52303), (1351, 20867), (1897, 14861), (2123, 13279), (2981, 9457)]