21587841

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 36661248

約数和(自身を除く): 15073407

約数列:

[1, 3, 9, 11, 17, 33, 51, 99, 101, 127, 153, 187, 303, 381, 561, 909, 1111, 1143, 1397, 1683, 1717, 2159, 3333, 4191, 5151, 6477, 9999, 12573, 12827, 15453, 18887, 19431, 23749, 38481, 56661, 71247, 115443, 141097, 169983, 213741, 218059, 423291, 654177, 1269873, 1962531, 2398649, 7195947, 21587841]

約数ペア:

[(1, 21587841), (3, 7195947), (9, 2398649), (11, 1962531), (17, 1269873), (33, 654177), (51, 423291), (99, 218059), (101, 213741), (127, 169983), (153, 141097), (187, 115443), (303, 71247), (381, 56661), (561, 38481), (909, 23749), (1111, 19431), (1143, 18887), (1397, 15453), (1683, 12827), (1717, 12573), (2159, 9999), (3333, 6477), (4191, 5151)]