28238049

素因数分解:

$3^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 48522240

約数和(自身を除く): 20284191

約数列:

[1, 3, 7, 9, 21, 59, 63, 71, 107, 177, 213, 321, 413, 497, 531, 639, 749, 963, 1239, 1491, 2247, 3717, 4189, 4473, 6313, 6741, 7597, 12567, 18939, 22791, 29323, 37701, 44191, 53179, 56817, 68373, 87969, 132573, 159537, 263907, 397719, 448223, 478611, 1344669, 3137561, 4034007, 9412683, 28238049]

約数ペア:

[(1, 28238049), (3, 9412683), (7, 4034007), (9, 3137561), (21, 1344669), (59, 478611), (63, 448223), (71, 397719), (107, 263907), (177, 159537), (213, 132573), (321, 87969), (413, 68373), (497, 56817), (531, 53179), (639, 44191), (749, 37701), (963, 29323), (1239, 22791), (1491, 18939), (2247, 12567), (3717, 7597), (4189, 6741), (4473, 6313)]