18689041

素因数分解:

$7^3\times {\mathrm{23}}^2\times {\mathrm{103}}^1$

素因数の和:170

約数の個数: 24

約数和(自身を含む): 23004800

約数和(自身を除く): 4315759

約数列:

[1, 7, 23, 49, 103, 161, 343, 529, 721, 1127, 2369, 3703, 5047, 7889, 16583, 25921, 35329, 54487, 116081, 181447, 381409, 812567, 2669863, 18689041]

約数ペア:

[(1, 18689041), (7, 2669863), (23, 812567), (49, 381409), (103, 181447), (161, 116081), (343, 54487), (529, 35329), (721, 25921), (1127, 16583), (2369, 7889), (3703, 5047)]