81485675

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{1759}}^1$

素因数の和:1895

約数の個数: 24

約数和(自身を含む): 108028800

約数和(自身を除く): 26543125

約数列:

[1, 5, 17, 25, 85, 109, 425, 545, 1759, 1853, 2725, 8795, 9265, 29903, 43975, 46325, 149515, 191731, 747575, 958655, 3259427, 4793275, 16297135, 81485675]

約数ペア:

[(1, 81485675), (5, 16297135), (17, 4793275), (25, 3259427), (85, 958655), (109, 747575), (425, 191731), (545, 149515), (1759, 46325), (1853, 43975), (2725, 29903), (8795, 9265)]