18900000009

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{190909091}}^1$

素因数の和:190909108

約数の個数: 12

約数和(自身を含む): 29781818352

約数和(自身を除く): 10881818343

約数列:

[1, 3, 9, 11, 33, 99, 190909091, 572727273, 1718181819, 2100000001, 6300000003, 18900000009]

約数ペア:

[(1, 18900000009), (3, 6300000003), (9, 2100000001), (11, 1718181819), (33, 572727273), (99, 190909091)]