201721317

素因数分解:

$3^1\times 7^1\times {\mathrm{643}}^1\times {\mathrm{14939}}^1$

素因数の和:15592

約数の個数: 16

約数和(自身を含む): 307883520

約数和(自身を除く): 106162203

約数列:

[1, 3, 7, 21, 643, 1929, 4501, 13503, 14939, 44817, 104573, 313719, 9605777, 28817331, 67240439, 201721317]

約数ペア:

[(1, 201721317), (3, 67240439), (7, 28817331), (21, 9605777), (643, 313719), (1929, 104573), (4501, 44817), (13503, 14939)]