28766871

素因数分解:

$3^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:141

約数の個数: 72

約数和(自身を含む): 52035984

約数和(自身を除く): 23269113

約数列:

[1, 3, 7, 9, 21, 37, 41, 43, 49, 63, 111, 123, 129, 147, 259, 287, 301, 333, 369, 387, 441, 777, 861, 903, 1517, 1591, 1763, 1813, 2009, 2107, 2331, 2583, 2709, 4551, 4773, 5289, 5439, 6027, 6321, 10619, 11137, 12341, 13653, 14319, 15867, 16317, 18081, 18963, 31857, 33411, 37023, 65231, 74333, 77959, 86387, 95571, 100233, 111069, 195693, 222999, 233877, 259161, 456617, 587079, 668997, 701631, 777483, 1369851, 3196319, 4109553, 9588957, 28766871]

約数ペア:

[(1, 28766871), (3, 9588957), (7, 4109553), (9, 3196319), (21, 1369851), (37, 777483), (41, 701631), (43, 668997), (49, 587079), (63, 456617), (111, 259161), (123, 233877), (129, 222999), (147, 195693), (259, 111069), (287, 100233), (301, 95571), (333, 86387), (369, 77959), (387, 74333), (441, 65231), (777, 37023), (861, 33411), (903, 31857), (1517, 18963), (1591, 18081), (1763, 16317), (1813, 15867), (2009, 14319), (2107, 13653), (2331, 12341), (2583, 11137), (2709, 10619), (4551, 6321), (4773, 6027), (5289, 5439)]