164440880

素因数分解:

$2^4\times 5^1\times {\mathrm{2055511}}^1$

素因数の和:2055524

約数の個数: 20

約数和(自身を含む): 382325232

約数和(自身を除く): 217884352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2055511, 4111022, 8222044, 10277555, 16444088, 20555110, 32888176, 41110220, 82220440, 164440880]

約数ペア:

[(1, 164440880), (2, 82220440), (4, 41110220), (5, 32888176), (8, 20555110), (10, 16444088), (16, 10277555), (20, 8222044), (40, 4111022), (80, 2055511)]