19012007

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{263}}^1\times {\mathrm{449}}^1$

素因数の和:742

約数の個数: 16

約数和(自身を含む): 22809600

約数和(自身を除く): 3797593

約数列:

[1, 7, 23, 161, 263, 449, 1841, 3143, 6049, 10327, 42343, 72289, 118087, 826609, 2716001, 19012007]

約数ペア:

[(1, 19012007), (7, 2716001), (23, 826609), (161, 118087), (263, 72289), (449, 42343), (1841, 10327), (3143, 6049)]