20271489

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{31139}}^1$

素因数の和:31180

約数の個数: 16

約数和(自身を含む): 31887360

約数和(自身を除く): 11615871

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 31139, 93417, 217973, 653919, 965309, 2895927, 6757163, 20271489]

約数ペア:

[(1, 20271489), (3, 6757163), (7, 2895927), (21, 965309), (31, 653919), (93, 217973), (217, 93417), (651, 31139)]