209726638

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{866639}}^1$

素因数の和:866663

約数の個数: 12

約数和(自身を含む): 345789360

約数和(自身を除く): 136062722

約数列:

[1, 2, 11, 22, 121, 242, 866639, 1733278, 9533029, 19066058, 104863319, 209726638]

約数ペア:

[(1, 209726638), (2, 104863319), (11, 19066058), (22, 9533029), (121, 1733278), (242, 866639)]