81818660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53129}}^1$

素因数の和:53156

約数の個数: 48

約数和(自身を含む): 214220160

約数和(自身を除く): 132401500

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 53129, 106258, 212516, 265645, 371903, 531290, 584419, 743806, 1062580, 1168838, 1487612, 1859515, 2337676, 2922095, 3719030, 4090933, 5844190, 7438060, 8181866, 11688380, 16363732, 20454665, 40909330, 81818660]

約数ペア:

[(1, 81818660), (2, 40909330), (4, 20454665), (5, 16363732), (7, 11688380), (10, 8181866), (11, 7438060), (14, 5844190), (20, 4090933), (22, 3719030), (28, 2922095), (35, 2337676), (44, 1859515), (55, 1487612), (70, 1168838), (77, 1062580), (110, 743806), (140, 584419), (154, 531290), (220, 371903), (308, 265645), (385, 212516), (770, 106258), (1540, 53129)]