128421951

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{142217}}^1$

素因数の和:142270

約数の個数: 16

約数和(自身を含む): 200242944

約数和(自身を除く): 71820993

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 142217, 426651, 995519, 2986557, 6115331, 18345993, 42807317, 128421951]

約数ペア:

[(1, 128421951), (3, 42807317), (7, 18345993), (21, 6115331), (43, 2986557), (129, 995519), (301, 426651), (903, 142217)]