21380786

素因数分解:

$2^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{14011}}^1$

素因数の和:14129

約数の個数: 16

約数和(自身を含む): 36991680

約数和(自身を除く): 15610894

約数列:

[1, 2, 7, 14, 109, 218, 763, 1526, 14011, 28022, 98077, 196154, 1527199, 3054398, 10690393, 21380786]

約数ペア:

[(1, 21380786), (2, 10690393), (7, 3054398), (14, 1527199), (109, 196154), (218, 98077), (763, 28022), (1526, 14011)]