18321121

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{911}}^1$

素因数の和:961

約数の個数: 24

約数和(自身を含む): 24033024

約数和(自身を除く): 5711903

約数列:

[1, 7, 13, 17, 91, 119, 169, 221, 911, 1183, 1547, 2873, 6377, 11843, 15487, 20111, 82901, 108409, 153959, 201331, 1077713, 1409317, 2617303, 18321121]

約数ペア:

[(1, 18321121), (7, 2617303), (13, 1409317), (17, 1077713), (91, 201331), (119, 153959), (169, 108409), (221, 82901), (911, 20111), (1183, 15487), (1547, 11843), (2873, 6377)]