20108991

素因数分解:

$3^1\times 7^1\times {\mathrm{83}}^2\times {\mathrm{139}}^1$

素因数の和:315

約数の個数: 24

約数和(自身を含む): 31239040

約数和(自身を除く): 11130049

約数列:

[1, 3, 7, 21, 83, 139, 249, 417, 581, 973, 1743, 2919, 6889, 11537, 20667, 34611, 48223, 80759, 144669, 242277, 957571, 2872713, 6702997, 20108991]

約数ペア:

[(1, 20108991), (3, 6702997), (7, 2872713), (21, 957571), (83, 242277), (139, 144669), (249, 80759), (417, 48223), (581, 34611), (973, 20667), (1743, 11537), (2919, 6889)]