247905

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{787}}^1$

素因数の和:805

約数の個数: 24

約数和(自身を含む): 491712

約数和(自身を除く): 243807

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 787, 2361, 3935, 5509, 7083, 11805, 16527, 27545, 35415, 49581, 82635, 247905]

約数ペア:

[(1, 247905), (3, 82635), (5, 49581), (7, 35415), (9, 27545), (15, 16527), (21, 11805), (35, 7083), (45, 5509), (63, 3935), (105, 2361), (315, 787)]