19785730

素因数分解:

$2^1\times 5^1\times {\mathrm{439}}^1\times {\mathrm{4507}}^1$

素因数の和:4953

約数の個数: 16

約数和(自身を含む): 35703360

約数和(自身を除く): 15917630

約数列:

[1, 2, 5, 10, 439, 878, 2195, 4390, 4507, 9014, 22535, 45070, 1978573, 3957146, 9892865, 19785730]

約数ペア:

[(1, 19785730), (2, 9892865), (5, 3957146), (10, 1978573), (439, 45070), (878, 22535), (2195, 9014), (4390, 4507)]