81809140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{12433}}^1$

素因数の和:12496

約数の個数: 48

約数和(自身を含む): 200535552

約数和(自身を除く): 118726412

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 140, 188, 235, 329, 470, 658, 940, 1316, 1645, 3290, 6580, 12433, 24866, 49732, 62165, 87031, 124330, 174062, 248660, 348124, 435155, 584351, 870310, 1168702, 1740620, 2337404, 2921755, 4090457, 5843510, 8180914, 11687020, 16361828, 20452285, 40904570, 81809140]

約数ペア:

[(1, 81809140), (2, 40904570), (4, 20452285), (5, 16361828), (7, 11687020), (10, 8180914), (14, 5843510), (20, 4090457), (28, 2921755), (35, 2337404), (47, 1740620), (70, 1168702), (94, 870310), (140, 584351), (188, 435155), (235, 348124), (329, 248660), (470, 174062), (658, 124330), (940, 87031), (1316, 62165), (1645, 49732), (3290, 24866), (6580, 12433)]