21422219

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{1559}}^1$

素因数の和:1730

約数の個数: 16

約数和(自身を含む): 26557440

約数和(自身を除く): 5135221

約数列:

[1, 7, 13, 91, 151, 1057, 1559, 1963, 10913, 13741, 20267, 141869, 235409, 1647863, 3060317, 21422219]

約数ペア:

[(1, 21422219), (7, 3060317), (13, 1647863), (91, 235409), (151, 141869), (1057, 20267), (1559, 13741), (1963, 10913)]