201008745

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{638123}}^1$

素因数の和:638141

約数の個数: 24

約数和(自身を含む): 398189376

約数和(自身を除く): 197180631

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 638123, 1914369, 3190615, 4466861, 5743107, 9571845, 13400583, 22334305, 28715535, 40201749, 67002915, 201008745]

約数ペア:

[(1, 201008745), (3, 67002915), (5, 40201749), (7, 28715535), (9, 22334305), (15, 13400583), (21, 9571845), (35, 5743107), (45, 4466861), (63, 3190615), (105, 1914369), (315, 638123)]