128162391

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{45887}}^1$

素因数の和:45923

約数の個数: 24

約数和(自身を含む): 209249280

約数和(自身を除く): 81086889

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 45887, 137661, 321209, 871853, 963627, 2248463, 2615559, 6102971, 6745389, 18308913, 42720797, 128162391]

約数ペア:

[(1, 128162391), (3, 42720797), (7, 18308913), (19, 6745389), (21, 6102971), (49, 2615559), (57, 2248463), (133, 963627), (147, 871853), (399, 321209), (931, 137661), (2793, 45887)]