19097720

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{2141}}^1$

素因数の和:2375

約数の個数: 32

約数和(自身を含む): 43182720

約数和(自身を除く): 24085000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2141, 2230, 4282, 4460, 8564, 8920, 10705, 17128, 21410, 42820, 85640, 477443, 954886, 1909772, 2387215, 3819544, 4774430, 9548860, 19097720]

約数ペア:

[(1, 19097720), (2, 9548860), (4, 4774430), (5, 3819544), (8, 2387215), (10, 1909772), (20, 954886), (40, 477443), (223, 85640), (446, 42820), (892, 21410), (1115, 17128), (1784, 10705), (2141, 8920), (2230, 8564), (4282, 4460)]