19017740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{135841}}^1$

素因数の和:135857

約数の個数: 24

約数和(自身を含む): 45642912

約数和(自身を除く): 26625172

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 135841, 271682, 543364, 679205, 950887, 1358410, 1901774, 2716820, 3803548, 4754435, 9508870, 19017740]

約数ペア:

[(1, 19017740), (2, 9508870), (4, 4754435), (5, 3803548), (7, 2716820), (10, 1901774), (14, 1358410), (20, 950887), (28, 679205), (35, 543364), (70, 271682), (140, 135841)]