20358740

素因数分解:

$2^2\times 5^1\times {\mathrm{997}}^1\times {\mathrm{1021}}^1$

素因数の和:2027

約数の個数: 24

約数和(自身を含む): 42838152

約数和(自身を除く): 22479412

約数列:

[1, 2, 4, 5, 10, 20, 997, 1021, 1994, 2042, 3988, 4084, 4985, 5105, 9970, 10210, 19940, 20420, 1017937, 2035874, 4071748, 5089685, 10179370, 20358740]

約数ペア:

[(1, 20358740), (2, 10179370), (4, 5089685), (5, 4071748), (10, 2035874), (20, 1017937), (997, 20420), (1021, 19940), (1994, 10210), (2042, 9970), (3988, 5105), (4084, 4985)]