18920797

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{607}}^1$

素因数の和:748

約数の個数: 16

約数和(自身を含む): 22316032

約数和(自身を除く): 3395235

約数列:

[1, 7, 61, 73, 427, 511, 607, 4249, 4453, 31171, 37027, 44311, 259189, 310177, 2702971, 18920797]

約数ペア:

[(1, 18920797), (7, 2702971), (61, 310177), (73, 259189), (427, 44311), (511, 37027), (607, 31171), (4249, 4453)]