28086009

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1637}}^1$

素因数の和:1709

約数の個数: 32

約数和(自身を含む): 46126080

約数和(自身を除く): 18040071

約数列:

[1, 3, 7, 19, 21, 43, 57, 129, 133, 301, 399, 817, 903, 1637, 2451, 4911, 5719, 11459, 17157, 31103, 34377, 70391, 93309, 211173, 217721, 492737, 653163, 1337429, 1478211, 4012287, 9362003, 28086009]

約数ペア:

[(1, 28086009), (3, 9362003), (7, 4012287), (19, 1478211), (21, 1337429), (43, 653163), (57, 492737), (129, 217721), (133, 211173), (301, 93309), (399, 70391), (817, 34377), (903, 31103), (1637, 17157), (2451, 11459), (4911, 5719)]