39820180

素因数分解:

$2^2\times 5^1\times {\mathrm{997}}^1\times {\mathrm{1997}}^1$

素因数の和:3003

約数の個数: 24

約数和(自身を含む): 83748168

約数和(自身を除く): 43927988

約数列:

[1, 2, 4, 5, 10, 20, 997, 1994, 1997, 3988, 3994, 4985, 7988, 9970, 9985, 19940, 19970, 39940, 1991009, 3982018, 7964036, 9955045, 19910090, 39820180]

約数ペア:

[(1, 39820180), (2, 19910090), (4, 9955045), (5, 7964036), (10, 3982018), (20, 1991009), (997, 39940), (1994, 19970), (1997, 19940), (3988, 9985), (3994, 9970), (4985, 7988)]