2018688021

素因数分解:

$3^3\times 7^1\times {\mathrm{10680889}}^1$

素因数の和:10680905

約数の個数: 16

約数和(自身を含む): 3417884800

約数和(自身を除く): 1399196779

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 10680889, 32042667, 74766223, 96128001, 224298669, 288384003, 672896007, 2018688021]

約数ペア:

[(1, 2018688021), (3, 672896007), (7, 288384003), (9, 224298669), (21, 96128001), (27, 74766223), (63, 32042667), (189, 10680889)]