18417897

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:174

約数の個数: 48

約数和(自身を含む): 29877120

約数和(自身を除く): 11459223

約数列:

[1, 3, 9, 19, 37, 41, 57, 71, 111, 123, 171, 213, 333, 369, 639, 703, 779, 1349, 1517, 2109, 2337, 2627, 2911, 4047, 4551, 6327, 7011, 7881, 8733, 12141, 13653, 23643, 26199, 28823, 49913, 55309, 86469, 107707, 149739, 165927, 259407, 323121, 449217, 497781, 969363, 2046433, 6139299, 18417897]

約数ペア:

[(1, 18417897), (3, 6139299), (9, 2046433), (19, 969363), (37, 497781), (41, 449217), (57, 323121), (71, 259407), (111, 165927), (123, 149739), (171, 107707), (213, 86469), (333, 55309), (369, 49913), (639, 28823), (703, 26199), (779, 23643), (1349, 13653), (1517, 12141), (2109, 8733), (2337, 7881), (2627, 7011), (2911, 6327), (4047, 4551)]