19953507

素因数分解:

$3^1\times 7^1\times {\mathrm{503}}^1\times {\mathrm{1889}}^1$

素因数の和:2402

約数の個数: 16

約数和(自身を含む): 30481920

約数和(自身を除く): 10528413

約数列:

[1, 3, 7, 21, 503, 1509, 1889, 3521, 5667, 10563, 13223, 39669, 950167, 2850501, 6651169, 19953507]

約数ペア:

[(1, 19953507), (3, 6651169), (7, 2850501), (21, 950167), (503, 39669), (1509, 13223), (1889, 10563), (3521, 5667)]