28757911

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{4451}}^1$

素因数の和:4542

約数の個数: 16

約数和(自身を含む): 35900928

約数和(自身を除く): 7143017

約数列:

[1, 7, 13, 71, 91, 497, 923, 4451, 6461, 31157, 57863, 316021, 405041, 2212147, 4108273, 28757911]

約数ペア:

[(1, 28757911), (7, 4108273), (13, 2212147), (71, 405041), (91, 316021), (497, 57863), (923, 31157), (4451, 6461)]