81200005

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{22777}}^1$

素因数の和:22836

約数の個数: 16

約数和(自身を含む): 104961024

約数和(自身を除く): 23761019

約数列:

[1, 5, 23, 31, 115, 155, 713, 3565, 22777, 113885, 523871, 706087, 2619355, 3530435, 16240001, 81200005]

約数ペア:

[(1, 81200005), (5, 16240001), (23, 3530435), (31, 2619355), (115, 706087), (155, 523871), (713, 113885), (3565, 22777)]