21989126

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{9109}}^1$

素因数の和:9199

約数の個数: 16

約数和(自身を含む): 35419680

約数和(自身を除く): 13430554

約数列:

[1, 2, 17, 34, 71, 142, 1207, 2414, 9109, 18218, 154853, 309706, 646739, 1293478, 10994563, 21989126]

約数ペア:

[(1, 21989126), (2, 10994563), (17, 1293478), (34, 646739), (71, 309706), (142, 154853), (1207, 18218), (2414, 9109)]