18945185

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{919}}^1$

素因数の和:981

約数の個数: 32

約数和(自身を含む): 28262400

約数和(自身を除く): 9317215

約数列:

[1, 5, 7, 19, 31, 35, 95, 133, 155, 217, 589, 665, 919, 1085, 2945, 4123, 4595, 6433, 17461, 20615, 28489, 32165, 87305, 122227, 142445, 199423, 541291, 611135, 997115, 2706455, 3789037, 18945185]

約数ペア:

[(1, 18945185), (5, 3789037), (7, 2706455), (19, 997115), (31, 611135), (35, 541291), (95, 199423), (133, 142445), (155, 122227), (217, 87305), (589, 32165), (665, 28489), (919, 20615), (1085, 17461), (2945, 6433), (4123, 4595)]