380980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{443}}^1$

素因数の和:495

約数の個数: 24

約数和(自身を含む): 820512

約数和(自身を除く): 439532

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 443, 860, 886, 1772, 2215, 4430, 8860, 19049, 38098, 76196, 95245, 190490, 380980]

約数ペア:

[(1, 380980), (2, 190490), (4, 95245), (5, 76196), (10, 38098), (20, 19049), (43, 8860), (86, 4430), (172, 2215), (215, 1772), (430, 886), (443, 860)]