19190900

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{4463}}^1$

素因数の和:4520

約数の個数: 36

約数和(自身を含む): 42622272

約数和(自身を除く): 23431372

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 4463, 8926, 17852, 22315, 44630, 89260, 111575, 191909, 223150, 383818, 446300, 767636, 959545, 1919090, 3838180, 4797725, 9595450, 19190900]

約数ペア:

[(1, 19190900), (2, 9595450), (4, 4797725), (5, 3838180), (10, 1919090), (20, 959545), (25, 767636), (43, 446300), (50, 383818), (86, 223150), (100, 191909), (172, 111575), (215, 89260), (430, 44630), (860, 22315), (1075, 17852), (2150, 8926), (4300, 4463)]