20975814

素因数分解:

$2^1\times 3^3\times {\mathrm{71}}^1\times {\mathrm{5471}}^1$

素因数の和:5553

約数の個数: 32

約数和(自身を含む): 47278080

約数和(自身を除く): 26302266

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 71, 142, 213, 426, 639, 1278, 1917, 3834, 5471, 10942, 16413, 32826, 49239, 98478, 147717, 295434, 388441, 776882, 1165323, 2330646, 3495969, 6991938, 10487907, 20975814]

約数ペア:

[(1, 20975814), (2, 10487907), (3, 6991938), (6, 3495969), (9, 2330646), (18, 1165323), (27, 776882), (54, 388441), (71, 295434), (142, 147717), (213, 98478), (426, 49239), (639, 32826), (1278, 16413), (1917, 10942), (3834, 5471)]