201681585

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{640259}}^1$

素因数の和:640277

約数の個数: 24

約数和(自身を含む): 399522240

約数和(自身を除く): 197840655

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 640259, 1920777, 3201295, 4481813, 5762331, 9603885, 13445439, 22409065, 28811655, 40336317, 67227195, 201681585]

約数ペア:

[(1, 201681585), (3, 67227195), (5, 40336317), (7, 28811655), (9, 22409065), (15, 13445439), (21, 9603885), (35, 5762331), (45, 4481813), (63, 3201295), (105, 1920777), (315, 640259)]