18821337

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{6653}}^1$

素因数の和:6720

約数の個数: 16

約数和(自身を含む): 26828928

約数和(自身を除く): 8007591

約数列:

[1, 3, 23, 41, 69, 123, 943, 2829, 6653, 19959, 153019, 272773, 459057, 818319, 6273779, 18821337]

約数ペア:

[(1, 18821337), (3, 6273779), (23, 818319), (41, 459057), (69, 272773), (123, 153019), (943, 19959), (2829, 6653)]