1987018

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{499}}^1$

素因数の和:693

約数の個数: 16

約数和(自身を含む): 3276000

約数和(自身を除く): 1288982

約数列:

[1, 2, 11, 22, 181, 362, 499, 998, 1991, 3982, 5489, 10978, 90319, 180638, 993509, 1987018]

約数ペア:

[(1, 1987018), (2, 993509), (11, 180638), (22, 90319), (181, 10978), (362, 5489), (499, 3982), (998, 1991)]