28286258

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:303

約数の個数: 64

約数和(自身を含む): 58060800

約数和(自身を除く): 29774542

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 71, 77, 91, 142, 143, 154, 182, 199, 286, 398, 497, 781, 923, 994, 1001, 1393, 1562, 1846, 2002, 2189, 2587, 2786, 4378, 5174, 5467, 6461, 10153, 10934, 12922, 14129, 15323, 18109, 20306, 28258, 28457, 30646, 36218, 56914, 71071, 98903, 142142, 155419, 183677, 197806, 199199, 310838, 367354, 398398, 1087933, 1285739, 2020447, 2175866, 2571478, 4040894, 14143129, 28286258]

約数ペア:

[(1, 28286258), (2, 14143129), (7, 4040894), (11, 2571478), (13, 2175866), (14, 2020447), (22, 1285739), (26, 1087933), (71, 398398), (77, 367354), (91, 310838), (142, 199199), (143, 197806), (154, 183677), (182, 155419), (199, 142142), (286, 98903), (398, 71071), (497, 56914), (781, 36218), (923, 30646), (994, 28457), (1001, 28258), (1393, 20306), (1562, 18109), (1846, 15323), (2002, 14129), (2189, 12922), (2587, 10934), (2786, 10153), (4378, 6461), (5174, 5467)]