26987121

素因数分解:

$3^3\times 7^1\times {\mathrm{142789}}^1$

素因数の和:142805

約数の個数: 16

約数和(自身を含む): 45692800

約数和(自身を除く): 18705679

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 142789, 428367, 999523, 1285101, 2998569, 3855303, 8995707, 26987121]

約数ペア:

[(1, 26987121), (3, 8995707), (7, 3855303), (9, 2998569), (21, 1285101), (27, 999523), (63, 428367), (189, 142789)]