28284669

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 48926592

約数和(自身を除く): 20641923

約数列:

[1, 3, 7, 9, 21, 43, 53, 63, 129, 159, 197, 301, 371, 387, 477, 591, 903, 1113, 1379, 1773, 2279, 2709, 3339, 4137, 6837, 8471, 10441, 12411, 15953, 20511, 25413, 31323, 47859, 59297, 73087, 76239, 93969, 143577, 177891, 219261, 448963, 533673, 657783, 1346889, 3142741, 4040667, 9428223, 28284669]

約数ペア:

[(1, 28284669), (3, 9428223), (7, 4040667), (9, 3142741), (21, 1346889), (43, 657783), (53, 533673), (63, 448963), (129, 219261), (159, 177891), (197, 143577), (301, 93969), (371, 76239), (387, 73087), (477, 59297), (591, 47859), (903, 31323), (1113, 25413), (1379, 20511), (1773, 15953), (2279, 12411), (2709, 10441), (3339, 8471), (4137, 6837)]