28721140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{205151}}^1$

素因数の和:205167

約数の個数: 24

約数和(自身を含む): 68931072

約数和(自身を除く): 40209932

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 205151, 410302, 820604, 1025755, 1436057, 2051510, 2872114, 4103020, 5744228, 7180285, 14360570, 28721140]

約数ペア:

[(1, 28721140), (2, 14360570), (4, 7180285), (5, 5744228), (7, 4103020), (10, 2872114), (14, 2051510), (20, 1436057), (28, 1025755), (35, 820604), (70, 410302), (140, 205151)]