21343707

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1621}}^1$

素因数の和:1664

約数の個数: 48

約数和(自身を含む): 40485120

約数和(自身を除く): 19141413

約数列:

[1, 3, 7, 9, 11, 19, 21, 33, 57, 63, 77, 99, 133, 171, 209, 231, 399, 627, 693, 1197, 1463, 1621, 1881, 4389, 4863, 11347, 13167, 14589, 17831, 30799, 34041, 53493, 92397, 102123, 124817, 160479, 215593, 277191, 338789, 374451, 646779, 1016367, 1123353, 1940337, 2371523, 3049101, 7114569, 21343707]

約数ペア:

[(1, 21343707), (3, 7114569), (7, 3049101), (9, 2371523), (11, 1940337), (19, 1123353), (21, 1016367), (33, 646779), (57, 374451), (63, 338789), (77, 277191), (99, 215593), (133, 160479), (171, 124817), (209, 102123), (231, 92397), (399, 53493), (627, 34041), (693, 30799), (1197, 17831), (1463, 14589), (1621, 13167), (1881, 11347), (4389, 4863)]