28391180

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{33013}}^1$

素因数の和:33065

約数の個数: 24

約数和(自身を含む): 61009872

約数和(自身を除く): 32618692

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 33013, 66026, 132052, 165065, 330130, 660260, 1419559, 2839118, 5678236, 7097795, 14195590, 28391180]

約数ペア:

[(1, 28391180), (2, 14195590), (4, 7097795), (5, 5678236), (10, 2839118), (20, 1419559), (43, 660260), (86, 330130), (172, 165065), (215, 132052), (430, 66026), (860, 33013)]