81733225

素因数分解:

$5^2\times 7^2\times {\mathrm{66721}}^1$

素因数の和:66745

約数の個数: 18

約数和(自身を含む): 117897774

約数和(自身を除く): 36164549

約数列:

[1, 5, 7, 25, 35, 49, 175, 245, 1225, 66721, 333605, 467047, 1668025, 2335235, 3269329, 11676175, 16346645, 81733225]

約数ペア:

[(1, 81733225), (5, 16346645), (7, 11676175), (25, 3269329), (35, 2335235), (49, 1668025), (175, 467047), (245, 333605), (1225, 66721)]