218820721

素因数分解:

$7^2\times {\mathrm{229}}^1\times {\mathrm{19501}}^1$

素因数の和:19744

約数の個数: 12

約数和(自身を含む): 255671220

約数和(自身を除く): 36850499

約数列:

[1, 7, 49, 229, 1603, 11221, 19501, 136507, 955549, 4465729, 31260103, 218820721]

約数ペア:

[(1, 218820721), (7, 31260103), (49, 4465729), (229, 955549), (1603, 136507), (11221, 19501)]