81057711

素因数分解:

$3^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{3967}}^1$

素因数の和:4123

約数の個数: 24

約数和(自身を含む): 126658560

約数和(自身を除く): 45600849

約数列:

[1, 3, 7, 21, 49, 139, 147, 417, 973, 2919, 3967, 6811, 11901, 20433, 27769, 83307, 194383, 551413, 583149, 1654239, 3859891, 11579673, 27019237, 81057711]

約数ペア:

[(1, 81057711), (3, 27019237), (7, 11579673), (21, 3859891), (49, 1654239), (139, 583149), (147, 551413), (417, 194383), (973, 83307), (2919, 27769), (3967, 20433), (6811, 11901)]