21250089

素因数分解:

$3^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{5717}}^1$

素因数の和:5789

約数の個数: 24

約数和(自身を含む): 35680320

約数和(自身を除く): 14430231

約数列:

[1, 3, 7, 9, 21, 59, 63, 177, 413, 531, 1239, 3717, 5717, 17151, 40019, 51453, 120057, 337303, 360171, 1011909, 2361121, 3035727, 7083363, 21250089]

約数ペア:

[(1, 21250089), (3, 7083363), (7, 3035727), (9, 2361121), (21, 1011909), (59, 360171), (63, 337303), (177, 120057), (413, 51453), (531, 40019), (1239, 17151), (3717, 5717)]