20747587

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{4157}}^1$

素因数の和:4218

約数の個数: 16

約数和(自身を含む): 25546752

約数和(自身を除く): 4799165

約数列:

[1, 7, 23, 31, 161, 217, 713, 4157, 4991, 29099, 95611, 128867, 669277, 902069, 2963941, 20747587]

約数ペア:

[(1, 20747587), (7, 2963941), (23, 902069), (31, 669277), (161, 128867), (217, 95611), (713, 29099), (4157, 4991)]