21380338

素因数分解:

$2^1\times 7^1\times {\mathrm{1213}}^1\times {\mathrm{1259}}^1$

素因数の和:2481

約数の個数: 16

約数和(自身を含む): 36711360

約数和(自身を除く): 15331022

約数列:

[1, 2, 7, 14, 1213, 1259, 2426, 2518, 8491, 8813, 16982, 17626, 1527167, 3054334, 10690169, 21380338]

約数ペア:

[(1, 21380338), (2, 10690169), (7, 3054334), (14, 1527167), (1213, 17626), (1259, 16982), (2426, 8813), (2518, 8491)]