20805729

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{26777}}^1$

素因数の和:26824

約数の個数: 16

約数和(自身を含む): 32562048

約数和(自身を除く): 11756319

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 26777, 80331, 187439, 562317, 990749, 2972247, 6935243, 20805729]

約数ペア:

[(1, 20805729), (3, 6935243), (7, 2972247), (21, 990749), (37, 562317), (111, 187439), (259, 80331), (777, 26777)]