19901140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{142151}}^1$

素因数の和:142167

約数の個数: 24

約数和(自身を含む): 47763072

約数和(自身を除く): 27861932

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 142151, 284302, 568604, 710755, 995057, 1421510, 1990114, 2843020, 3980228, 4975285, 9950570, 19901140]

約数ペア:

[(1, 19901140), (2, 9950570), (4, 4975285), (5, 3980228), (7, 2843020), (10, 1990114), (14, 1421510), (20, 995057), (28, 710755), (35, 568604), (70, 284302), (140, 142151)]