18843460

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{21911}}^1$

素因数の和:21963

約数の個数: 24

約数和(自身を含む): 40493376

約数和(自身を除く): 21649916

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 21911, 43822, 87644, 109555, 219110, 438220, 942173, 1884346, 3768692, 4710865, 9421730, 18843460]

約数ペア:

[(1, 18843460), (2, 9421730), (4, 4710865), (5, 3768692), (10, 1884346), (20, 942173), (43, 438220), (86, 219110), (172, 109555), (215, 87644), (430, 43822), (860, 21911)]