20780277

素因数分解:

$3^1\times 7^1\times {\mathrm{907}}^1\times {\mathrm{1091}}^1$

素因数の和:2008

約数の個数: 16

約数和(自身を含む): 31729152

約数和(自身を除く): 10948875

約数列:

[1, 3, 7, 21, 907, 1091, 2721, 3273, 6349, 7637, 19047, 22911, 989537, 2968611, 6926759, 20780277]

約数ペア:

[(1, 20780277), (3, 6926759), (7, 2968611), (21, 989537), (907, 22911), (1091, 19047), (2721, 7637), (3273, 6349)]