28785057

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{3797}}^1$

素因数の和:3845

約数の個数: 24

約数和(自身を含む): 46305216

約数和(自身を除く): 17520159

約数列:

[1, 3, 7, 19, 21, 57, 133, 361, 399, 1083, 2527, 3797, 7581, 11391, 26579, 72143, 79737, 216429, 505001, 1370717, 1515003, 4112151, 9595019, 28785057]

約数ペア:

[(1, 28785057), (3, 9595019), (7, 4112151), (19, 1515003), (21, 1370717), (57, 505001), (133, 216429), (361, 79737), (399, 72143), (1083, 26579), (2527, 11391), (3797, 7581)]