19893020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{383}}^1$

素因数の和:459

約数の個数: 72

約数和(自身を含む): 49641984

約数和(自身を除く): 29748964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 53, 70, 98, 106, 140, 196, 212, 245, 265, 371, 383, 490, 530, 742, 766, 980, 1060, 1484, 1532, 1855, 1915, 2597, 2681, 3710, 3830, 5194, 5362, 7420, 7660, 10388, 10724, 12985, 13405, 18767, 20299, 25970, 26810, 37534, 40598, 51940, 53620, 75068, 81196, 93835, 101495, 142093, 187670, 202990, 284186, 375340, 405980, 568372, 710465, 994651, 1420930, 1989302, 2841860, 3978604, 4973255, 9946510, 19893020]

約数ペア:

[(1, 19893020), (2, 9946510), (4, 4973255), (5, 3978604), (7, 2841860), (10, 1989302), (14, 1420930), (20, 994651), (28, 710465), (35, 568372), (49, 405980), (53, 375340), (70, 284186), (98, 202990), (106, 187670), (140, 142093), (196, 101495), (212, 93835), (245, 81196), (265, 75068), (371, 53620), (383, 51940), (490, 40598), (530, 37534), (742, 26810), (766, 25970), (980, 20299), (1060, 18767), (1484, 13405), (1532, 12985), (1855, 10724), (1915, 10388), (2597, 7660), (2681, 7420), (3710, 5362), (3830, 5194)]