20983291

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^2\times {\mathrm{59}}^1$

素因数の和:183

約数の個数: 24

約数和(自身を含む): 26000640

約数和(自身を除く): 5017349

約数列:

[1, 7, 23, 47, 59, 161, 329, 413, 1081, 1357, 2209, 2773, 7567, 9499, 15463, 19411, 50807, 63779, 130331, 355649, 446453, 912317, 2997613, 20983291]

約数ペア:

[(1, 20983291), (7, 2997613), (23, 912317), (47, 446453), (59, 355649), (161, 130331), (329, 63779), (413, 50807), (1081, 19411), (1357, 15463), (2209, 9499), (2773, 7567)]