18116991

素因数分解:

$3^2\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{307}}^1$

素因数の和:475

約数の個数: 24

約数和(自身を含む): 26906880

約数和(自身を除く): 8789889

約数列:

[1, 3, 9, 79, 83, 237, 249, 307, 711, 747, 921, 2763, 6557, 19671, 24253, 25481, 59013, 72759, 76443, 218277, 229329, 2012999, 6038997, 18116991]

約数ペア:

[(1, 18116991), (3, 6038997), (9, 2012999), (79, 229329), (83, 218277), (237, 76443), (249, 72759), (307, 59013), (711, 25481), (747, 24253), (921, 19671), (2763, 6557)]