20197940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{144271}}^1$

素因数の和:144287

約数の個数: 24

約数和(自身を含む): 48475392

約数和(自身を除く): 28277452

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 144271, 288542, 577084, 721355, 1009897, 1442710, 2019794, 2885420, 4039588, 5049485, 10098970, 20197940]

約数ペア:

[(1, 20197940), (2, 10098970), (4, 5049485), (5, 4039588), (7, 2885420), (10, 2019794), (14, 1442710), (20, 1009897), (28, 721355), (35, 577084), (70, 288542), (140, 144271)]