81287836

素因数分解:

$2^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{39769}}^1$

素因数の和:39853

約数の個数: 24

約数和(自身を含む): 164806880

約数和(自身を除く): 83519044

約数列:

[1, 2, 4, 7, 14, 28, 73, 146, 292, 511, 1022, 2044, 39769, 79538, 159076, 278383, 556766, 1113532, 2903137, 5806274, 11612548, 20321959, 40643918, 81287836]

約数ペア:

[(1, 81287836), (2, 40643918), (4, 20321959), (7, 11612548), (14, 5806274), (28, 2903137), (73, 1113532), (146, 556766), (292, 278383), (511, 159076), (1022, 79538), (2044, 39769)]