18706821

素因数分解:

$3^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{10009}}^1$

素因数の和:10108

約数の個数: 16

約数和(自身を含む): 28828800

約数和(自身を除く): 10121979

約数列:

[1, 3, 7, 21, 89, 267, 623, 1869, 10009, 30027, 70063, 210189, 890801, 2672403, 6235607, 18706821]

約数ペア:

[(1, 18706821), (3, 6235607), (7, 2672403), (21, 890801), (89, 210189), (267, 70063), (623, 30027), (1869, 10009)]