21132393

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{1531}}^1$

素因数の和:1684

約数の個数: 16

約数和(自身を含む): 29120256

約数和(自身を除く): 7987863

約数列:

[1, 3, 43, 107, 129, 321, 1531, 4593, 4601, 13803, 65833, 163817, 197499, 491451, 7044131, 21132393]

約数ペア:

[(1, 21132393), (3, 7044131), (43, 491451), (107, 197499), (129, 163817), (321, 65833), (1531, 13803), (4593, 4601)]