20858740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{148991}}^1$

素因数の和:149007

約数の個数: 24

約数和(自身を含む): 50061312

約数和(自身を除く): 29202572

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 148991, 297982, 595964, 744955, 1042937, 1489910, 2085874, 2979820, 4171748, 5214685, 10429370, 20858740]

約数ペア:

[(1, 20858740), (2, 10429370), (4, 5214685), (5, 4171748), (7, 2979820), (10, 2085874), (14, 1489910), (20, 1042937), (28, 744955), (35, 595964), (70, 297982), (140, 148991)]