20211471

素因数分解:

$3^3\times 7^2\times {\mathrm{15277}}^1$

素因数の和:15300

約数の個数: 24

約数和(自身を含む): 34833840

約数和(自身を除く): 14622369

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 15277, 45831, 106939, 137493, 320817, 412479, 748573, 962451, 2245719, 2887353, 6737157, 20211471]

約数ペア:

[(1, 20211471), (3, 6737157), (7, 2887353), (9, 2245719), (21, 962451), (27, 748573), (49, 412479), (63, 320817), (147, 137493), (189, 106939), (441, 45831), (1323, 15277)]