18389427

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{51511}}^1$

素因数の和:51538

約数の個数: 16

約数和(自身を含む): 29670912

約数和(自身を除く): 11281485

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 51511, 154533, 360577, 875687, 1081731, 2627061, 6129809, 18389427]

約数ペア:

[(1, 18389427), (3, 6129809), (7, 2627061), (17, 1081731), (21, 875687), (51, 360577), (119, 154533), (357, 51511)]