18189731

素因数分解:

$7^2\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:243

約数の個数: 24

約数和(自身を含む): 22120560

約数和(自身を除く): 3930829

約数列:

[1, 7, 43, 49, 89, 97, 301, 623, 679, 2107, 3827, 4171, 4361, 4753, 8633, 26789, 29197, 60431, 187523, 204379, 371219, 423017, 2598533, 18189731]

約数ペア:

[(1, 18189731), (7, 2598533), (43, 423017), (49, 371219), (89, 204379), (97, 187523), (301, 60431), (623, 29197), (679, 26789), (2107, 8633), (3827, 4753), (4171, 4361)]