19905718

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{61819}}^1$

素因数の和:61851

約数の個数: 16

約数和(自身を含む): 35608320

約数和(自身を除く): 15702602

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 61819, 123638, 432733, 865466, 1421837, 2843674, 9952859, 19905718]

約数ペア:

[(1, 19905718), (2, 9952859), (7, 2843674), (14, 1421837), (23, 865466), (46, 432733), (161, 123638), (322, 61819)]