20117195

素因数分解:

$5^1\times 7^2\times {\mathrm{157}}^1\times {\mathrm{523}}^1$

素因数の和:699

約数の個数: 24

約数和(自身を含む): 28314864

約数和(自身を除く): 8197669

約数列:

[1, 5, 7, 35, 49, 157, 245, 523, 785, 1099, 2615, 3661, 5495, 7693, 18305, 25627, 38465, 82111, 128135, 410555, 574777, 2873885, 4023439, 20117195]

約数ペア:

[(1, 20117195), (5, 4023439), (7, 2873885), (35, 574777), (49, 410555), (157, 128135), (245, 82111), (523, 38465), (785, 25627), (1099, 18305), (2615, 7693), (3661, 5495)]