18900567

素因数分解:

$3^3\times 7^1\times {\mathrm{100003}}^1$

素因数の和:100019

約数の個数: 16

約数和(自身を含む): 32001280

約数和(自身を除く): 13100713

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 100003, 300009, 700021, 900027, 2100063, 2700081, 6300189, 18900567]

約数ペア:

[(1, 18900567), (3, 6300189), (7, 2700081), (9, 2100063), (21, 900027), (27, 700021), (63, 300009), (189, 100003)]