20468860

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{23801}}^1$

素因数の和:23853

約数の個数: 24

約数和(自身を含む): 43986096

約数和(自身を除く): 23517236

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 23801, 47602, 95204, 119005, 238010, 476020, 1023443, 2046886, 4093772, 5117215, 10234430, 20468860]

約数ペア:

[(1, 20468860), (2, 10234430), (4, 5117215), (5, 4093772), (10, 2046886), (20, 1023443), (43, 476020), (86, 238010), (172, 119005), (215, 95204), (430, 47602), (860, 23801)]