398045007440

素因数分解:

$2^4\times 5^1\times {\mathrm{4975562593}}^1$

素因数の和:4975562606

約数の個数: 20

約数和(自身を含む): 925454642484

約数和(自身を除く): 527409635044

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4975562593, 9951125186, 19902250372, 24877812965, 39804500744, 49755625930, 79609001488, 99511251860, 199022503720, 398045007440]

約数ペア:

[(1, 398045007440), (2, 199022503720), (4, 99511251860), (5, 79609001488), (8, 49755625930), (10, 39804500744), (16, 24877812965), (20, 19902250372), (40, 9951125186), (80, 4975562593)]