20009997

素因数分解:

$3^4\times 7^1\times {\mathrm{35291}}^1$

素因数の和:35310

約数の個数: 20

約数和(自身を含む): 34162656

約数和(自身を除く): 14152659

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 35291, 105873, 247037, 317619, 741111, 952857, 2223333, 2858571, 6669999, 20009997]

約数ペア:

[(1, 20009997), (3, 6669999), (7, 2858571), (9, 2223333), (21, 952857), (27, 741111), (63, 317619), (81, 247037), (189, 105873), (567, 35291)]