209881441

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{937}}^1\times {\mathrm{2909}}^1$

素因数の和:3864

約数の個数: 16

約数和(自身を含む): 262039680

約数和(自身を除く): 52158239

約数列:

[1, 7, 11, 77, 937, 2909, 6559, 10307, 20363, 31999, 72149, 223993, 2725733, 19080131, 29983063, 209881441]

約数ペア:

[(1, 209881441), (7, 29983063), (11, 19080131), (77, 2725733), (937, 223993), (2909, 72149), (6559, 31999), (10307, 20363)]