19454920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11311}}^1$

素因数の和:11365

約数の個数: 32

約数和(自身を含む): 44795520

約数和(自身を除く): 25340600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11311, 22622, 45244, 56555, 90488, 113110, 226220, 452440, 486373, 972746, 1945492, 2431865, 3890984, 4863730, 9727460, 19454920]

約数ペア:

[(1, 19454920), (2, 9727460), (4, 4863730), (5, 3890984), (8, 2431865), (10, 1945492), (20, 972746), (40, 486373), (43, 452440), (86, 226220), (172, 113110), (215, 90488), (344, 56555), (430, 45244), (860, 22622), (1720, 11311)]