209891198

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{867319}}^1$

素因数の和:867343

約数の個数: 12

約数和(自身を含む): 346060680

約数和(自身を除く): 136169482

約数列:

[1, 2, 11, 22, 121, 242, 867319, 1734638, 9540509, 19081018, 104945599, 209891198]

約数ペア:

[(1, 209891198), (2, 104945599), (11, 19081018), (22, 9540509), (121, 1734638), (242, 867319)]