21743799

素因数分解:

$3^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1$

素因数の和:165

約数の個数: 64

約数和(自身を含む): 39398400

約数和(自身を除く): 17654601

約数列:

[1, 3, 7, 11, 17, 21, 33, 49, 51, 77, 113, 119, 147, 187, 231, 339, 343, 357, 539, 561, 791, 833, 1029, 1243, 1309, 1617, 1921, 2373, 2499, 3729, 3773, 3927, 5537, 5763, 5831, 8701, 9163, 11319, 13447, 16611, 17493, 21131, 26103, 27489, 38759, 40341, 60907, 63393, 64141, 94129, 116277, 147917, 182721, 192423, 282387, 426349, 443751, 658903, 1035419, 1279047, 1976709, 3106257, 7247933, 21743799]

約数ペア:

[(1, 21743799), (3, 7247933), (7, 3106257), (11, 1976709), (17, 1279047), (21, 1035419), (33, 658903), (49, 443751), (51, 426349), (77, 282387), (113, 192423), (119, 182721), (147, 147917), (187, 116277), (231, 94129), (339, 64141), (343, 63393), (357, 60907), (539, 40341), (561, 38759), (791, 27489), (833, 26103), (1029, 21131), (1243, 17493), (1309, 16611), (1617, 13447), (1921, 11319), (2373, 9163), (2499, 8701), (3729, 5831), (3773, 5763), (3927, 5537)]