20938539

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1\times {\mathrm{499}}^1$

素因数の和:770

約数の個数: 16

約数和(自身を含む): 28512000

約数和(自身を除く): 7573461

約数列:

[1, 3, 71, 197, 213, 499, 591, 1497, 13987, 35429, 41961, 98303, 106287, 294909, 6979513, 20938539]

約数ペア:

[(1, 20938539), (3, 6979513), (71, 294909), (197, 106287), (213, 98303), (499, 41961), (591, 35429), (1497, 13987)]