245391489

素因数分解:

$3^2\times 7^1\times {\mathrm{491}}^1\times {\mathrm{7933}}^1$

素因数の和:8437

約数の個数: 24

約数和(自身を含む): 405966912

約数和(自身を除く): 160575423

約数列:

[1, 3, 7, 9, 21, 63, 491, 1473, 3437, 4419, 7933, 10311, 23799, 30933, 55531, 71397, 166593, 499779, 3895103, 11685309, 27265721, 35055927, 81797163, 245391489]

約数ペア:

[(1, 245391489), (3, 81797163), (7, 35055927), (9, 27265721), (21, 11685309), (63, 3895103), (491, 499779), (1473, 166593), (3437, 71397), (4419, 55531), (7933, 30933), (10311, 23799)]