21307959

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{1303}}^1$

素因数の和:1411

約数の個数: 24

約数和(自身を含む): 32547840

約数和(自身を除く): 11239881

約数列:

[1, 3, 9, 23, 69, 79, 207, 237, 711, 1303, 1817, 3909, 5451, 11727, 16353, 29969, 89907, 102937, 269721, 308811, 926433, 2367551, 7102653, 21307959]

約数ペア:

[(1, 21307959), (3, 7102653), (9, 2367551), (23, 926433), (69, 308811), (79, 269721), (207, 102937), (237, 89907), (711, 29969), (1303, 16353), (1817, 11727), (3909, 5451)]