20772780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49459}}^1$

素因数の和:49478

約数の個数: 48

約数和(自身を含む): 66474240

約数和(自身を除く): 45701460

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 49459, 98918, 148377, 197836, 247295, 296754, 346213, 494590, 593508, 692426, 741885, 989180, 1038639, 1384852, 1483770, 1731065, 2077278, 2967540, 3462130, 4154556, 5193195, 6924260, 10386390, 20772780]

約数ペア:

[(1, 20772780), (2, 10386390), (3, 6924260), (4, 5193195), (5, 4154556), (6, 3462130), (7, 2967540), (10, 2077278), (12, 1731065), (14, 1483770), (15, 1384852), (20, 1038639), (21, 989180), (28, 741885), (30, 692426), (35, 593508), (42, 494590), (60, 346213), (70, 296754), (84, 247295), (105, 197836), (140, 148377), (210, 98918), (420, 49459)]