20780515091

素因数分解:

$7^1\times {\mathrm{37}}^2\times {\mathrm{281}}^1\times {\mathrm{7717}}^1$

素因数の和:8079

約数の個数: 24

約数和(自身を含む): 24498413856

約数和(自身を除く): 3717898765

約数列:

[1, 7, 37, 259, 281, 1369, 1967, 7717, 9583, 10397, 54019, 72779, 285529, 384689, 1998703, 2168477, 2692823, 10564573, 15179339, 73952011, 80233649, 561635543, 2968645013, 20780515091]

約数ペア:

[(1, 20780515091), (7, 2968645013), (37, 561635543), (259, 80233649), (281, 73952011), (1369, 15179339), (1967, 10564573), (7717, 2692823), (9583, 2168477), (10397, 1998703), (54019, 384689), (72779, 285529)]