19701731

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{1549}}^1$

素因数の和:1658

約数の個数: 16

約数和(自身を含む): 23808000

約数和(自身を除く): 4106269

約数列:

[1, 7, 23, 79, 161, 553, 1549, 1817, 10843, 12719, 35627, 122371, 249389, 856597, 2814533, 19701731]

約数ペア:

[(1, 19701731), (7, 2814533), (23, 856597), (79, 249389), (161, 122371), (553, 35627), (1549, 12719), (1817, 10843)]