390231280

素因数分解:

$2^4\times 5^1\times {\mathrm{4877891}}^1$

素因数の和:4877904

約数の個数: 20

約数和(自身を含む): 907287912

約数和(自身を除く): 517056632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4877891, 9755782, 19511564, 24389455, 39023128, 48778910, 78046256, 97557820, 195115640, 390231280]

約数ペア:

[(1, 390231280), (2, 195115640), (4, 97557820), (5, 78046256), (8, 48778910), (10, 39023128), (16, 24389455), (20, 19511564), (40, 9755782), (80, 4877891)]