239421721

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{167}}^1\times {\mathrm{433}}^1$

素因数の和:661

約数の個数: 32

約数和(自身を含む): 307980288

約数和(自身を除く): 68558567

約数列:

[1, 7, 11, 43, 77, 167, 301, 433, 473, 1169, 1837, 3031, 3311, 4763, 7181, 12859, 18619, 33341, 50267, 72311, 78991, 130333, 204809, 506177, 552937, 795421, 1433663, 3109373, 5567947, 21765611, 34203103, 239421721]

約数ペア:

[(1, 239421721), (7, 34203103), (11, 21765611), (43, 5567947), (77, 3109373), (167, 1433663), (301, 795421), (433, 552937), (473, 506177), (1169, 204809), (1837, 130333), (3031, 78991), (3311, 72311), (4763, 50267), (7181, 33341), (12859, 18619)]