20565223

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{4019}}^1$

素因数の和:4086

約数の個数: 16

約数和(自身を含む): 25470720

約数和(自身を除く): 4905497

約数列:

[1, 7, 17, 43, 119, 301, 731, 4019, 5117, 28133, 68323, 172817, 478261, 1209719, 2937889, 20565223]

約数ペア:

[(1, 20565223), (7, 2937889), (17, 1209719), (43, 478261), (119, 172817), (301, 68323), (731, 28133), (4019, 5117)]