18918320

素因数分解:

$2^4\times 5^1\times {\mathrm{236479}}^1$

素因数の和:236492

約数の個数: 20

約数和(自身を含む): 43985280

約数和(自身を除く): 25066960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 236479, 472958, 945916, 1182395, 1891832, 2364790, 3783664, 4729580, 9459160, 18918320]

約数ペア:

[(1, 18918320), (2, 9459160), (4, 4729580), (5, 3783664), (8, 2364790), (10, 1891832), (16, 1182395), (20, 945916), (40, 472958), (80, 236479)]