18986660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{12329}}^1$

素因数の和:12356

約数の個数: 48

約数和(自身を含む): 49714560

約数和(自身を除く): 30727900

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 12329, 24658, 49316, 61645, 86303, 123290, 135619, 172606, 246580, 271238, 345212, 431515, 542476, 678095, 863030, 949333, 1356190, 1726060, 1898666, 2712380, 3797332, 4746665, 9493330, 18986660]

約数ペア:

[(1, 18986660), (2, 9493330), (4, 4746665), (5, 3797332), (7, 2712380), (10, 1898666), (11, 1726060), (14, 1356190), (20, 949333), (22, 863030), (28, 678095), (35, 542476), (44, 431515), (55, 345212), (70, 271238), (77, 246580), (110, 172606), (140, 135619), (154, 123290), (220, 86303), (308, 61645), (385, 49316), (770, 24658), (1540, 12329)]