20664021

素因数分解:

$3^1\times 7^1\times {\mathrm{271}}^1\times {\mathrm{3631}}^1$

素因数の和:3912

約数の個数: 16

約数和(自身を含む): 31612928

約数和(自身を除く): 10948907

約数列:

[1, 3, 7, 21, 271, 813, 1897, 3631, 5691, 10893, 25417, 76251, 984001, 2952003, 6888007, 20664021]

約数ペア:

[(1, 20664021), (3, 6888007), (7, 2952003), (21, 984001), (271, 76251), (813, 25417), (1897, 10893), (3631, 5691)]