20158180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1051}}^1$

素因数の和:1204

約数の個数: 48

約数和(自身を含む): 48779136

約数和(自身を除く): 28620956

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 137, 140, 274, 548, 685, 959, 1051, 1370, 1918, 2102, 2740, 3836, 4204, 4795, 5255, 7357, 9590, 10510, 14714, 19180, 21020, 29428, 36785, 73570, 143987, 147140, 287974, 575948, 719935, 1007909, 1439870, 2015818, 2879740, 4031636, 5039545, 10079090, 20158180]

約数ペア:

[(1, 20158180), (2, 10079090), (4, 5039545), (5, 4031636), (7, 2879740), (10, 2015818), (14, 1439870), (20, 1007909), (28, 719935), (35, 575948), (70, 287974), (137, 147140), (140, 143987), (274, 73570), (548, 36785), (685, 29428), (959, 21020), (1051, 19180), (1370, 14714), (1918, 10510), (2102, 9590), (2740, 7357), (3836, 5255), (4204, 4795)]