20991614

素因数分解:

$2^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{5413}}^1$

素因数の和:5699

約数の個数: 16

約数和(自身を含む): 36122208

約数和(自身を除く): 15130594

約数列:

[1, 2, 7, 14, 277, 554, 1939, 3878, 5413, 10826, 37891, 75782, 1499401, 2998802, 10495807, 20991614]

約数ペア:

[(1, 20991614), (2, 10495807), (7, 2998802), (14, 1499401), (277, 75782), (554, 37891), (1939, 10826), (3878, 5413)]