20051731

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{137}}^1$

素因数の和:283

約数の個数: 24

約数和(自身を含む): 24541920

約数和(自身を除く): 4490189

約数列:

[1, 7, 29, 49, 103, 137, 203, 721, 959, 1421, 2987, 3973, 5047, 6713, 14111, 20909, 27811, 98777, 146363, 194677, 409219, 691439, 2864533, 20051731]

約数ペア:

[(1, 20051731), (7, 2864533), (29, 691439), (49, 409219), (103, 194677), (137, 146363), (203, 98777), (721, 27811), (959, 20909), (1421, 14111), (2987, 6713), (3973, 5047)]