19691979

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{6637}}^1$

素因数の和:6706

約数の個数: 16

約数和(自身を含む): 28038912

約数和(自身を除く): 8346933

約数列:

[1, 3, 23, 43, 69, 129, 989, 2967, 6637, 19911, 152651, 285391, 457953, 856173, 6563993, 19691979]

約数ペア:

[(1, 19691979), (3, 6563993), (23, 856173), (43, 457953), (69, 285391), (129, 152651), (989, 19911), (2967, 6637)]