20317857

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{13627}}^1$

素因数の和:13708

約数の個数: 16

約数和(自身を含む): 31398912

約数和(自身を除く): 11081055

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 13627, 40881, 95389, 286167, 967517, 2902551, 6772619, 20317857]

約数ペア:

[(1, 20317857), (3, 6772619), (7, 2902551), (21, 967517), (71, 286167), (213, 95389), (497, 40881), (1491, 13627)]