21804377

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{1129}}^1$

素因数の和:1256

約数の個数: 16

約数和(自身を含む): 26035200

約数和(自身を除く): 4230823

約数列:

[1, 7, 31, 89, 217, 623, 1129, 2759, 7903, 19313, 34999, 100481, 244993, 703367, 3114911, 21804377]

約数ペア:

[(1, 21804377), (7, 3114911), (31, 703367), (89, 244993), (217, 100481), (623, 34999), (1129, 19313), (2759, 7903)]