20989227

素因数分解:

$3^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{9341}}^1$

素因数の和:9458

約数の個数: 16

約数和(自身を含む): 32285952

約数和(自身を除く): 11296725

約数列:

[1, 3, 7, 21, 107, 321, 749, 2247, 9341, 28023, 65387, 196161, 999487, 2998461, 6996409, 20989227]

約数ペア:

[(1, 20989227), (3, 6996409), (7, 2998461), (21, 999487), (107, 196161), (321, 65387), (749, 28023), (2247, 9341)]