21000879788

素因数分解:

$2^2\times 7^1\times {\mathrm{467}}^1\times {\mathrm{881}}^1\times {\mathrm{1823}}^1$

素因数の和:3182

約数の個数: 48

約数和(自身を含む): 42162591744

約数和(自身を除く): 21161711956

約数列:

[1, 2, 4, 7, 14, 28, 467, 881, 934, 1762, 1823, 1868, 3269, 3524, 3646, 6167, 6538, 7292, 12334, 12761, 13076, 24668, 25522, 51044, 411427, 822854, 851341, 1606063, 1645708, 1702682, 2879989, 3212126, 3405364, 5759978, 5959387, 6424252, 11242441, 11519956, 11918774, 22484882, 23837548, 44969764, 750031421, 1500062842, 3000125684, 5250219947, 10500439894, 21000879788]

約数ペア:

[(1, 21000879788), (2, 10500439894), (4, 5250219947), (7, 3000125684), (14, 1500062842), (28, 750031421), (467, 44969764), (881, 23837548), (934, 22484882), (1762, 11918774), (1823, 11519956), (1868, 11242441), (3269, 6424252), (3524, 5959387), (3646, 5759978), (6167, 3405364), (6538, 3212126), (7292, 2879989), (12334, 1702682), (12761, 1645708), (13076, 1606063), (24668, 851341), (25522, 822854), (51044, 411427)]