21075383

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{1657}}^1$

素因数の和:1766

約数の個数: 16

約数和(自身を含む): 25466880

約数和(自身を除く): 4391497

約数列:

[1, 7, 23, 79, 161, 553, 1657, 1817, 11599, 12719, 38111, 130903, 266777, 916321, 3010769, 21075383]

約数ペア:

[(1, 21075383), (7, 3010769), (23, 916321), (79, 266777), (161, 130903), (553, 38111), (1657, 12719), (1817, 11599)]