21091112

素因数分解:

$2^3\times 7^1\times {\mathrm{376627}}^1$

素因数の和:376640

約数の個数: 16

約数和(自身を含む): 45195360

約数和(自身を除く): 24104248

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 376627, 753254, 1506508, 2636389, 3013016, 5272778, 10545556, 21091112]

約数ペア:

[(1, 21091112), (2, 10545556), (4, 5272778), (7, 3013016), (8, 2636389), (14, 1506508), (28, 753254), (56, 376627)]