39159440

素因数分解:

$2^4\times 5^1\times {\mathrm{489493}}^1$

素因数の和:489506

約数の個数: 20

約数和(自身を含む): 91045884

約数和(自身を除く): 51886444

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 489493, 978986, 1957972, 2447465, 3915944, 4894930, 7831888, 9789860, 19579720, 39159440]

約数ペア:

[(1, 39159440), (2, 19579720), (4, 9789860), (5, 7831888), (8, 4894930), (10, 3915944), (16, 2447465), (20, 1957972), (40, 978986), (80, 489493)]