7640240

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2221}}^1$

素因数の和:2277

約数の個数: 40

約数和(自身を含む): 18184848

約数和(自身を除く): 10544608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 2221, 3440, 4442, 8884, 11105, 17768, 22210, 35536, 44420, 88840, 95503, 177680, 191006, 382012, 477515, 764024, 955030, 1528048, 1910060, 3820120, 7640240]

約数ペア:

[(1, 7640240), (2, 3820120), (4, 1910060), (5, 1528048), (8, 955030), (10, 764024), (16, 477515), (20, 382012), (40, 191006), (43, 177680), (80, 95503), (86, 88840), (172, 44420), (215, 35536), (344, 22210), (430, 17768), (688, 11105), (860, 8884), (1720, 4442), (2221, 3440)]