20581475

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{613}}^1$

素因数の和:719

約数の個数: 24

約数和(自身を含む): 27408960

約数和(自身を除く): 6827485

約数列:

[1, 5, 17, 25, 79, 85, 395, 425, 613, 1343, 1975, 3065, 6715, 10421, 15325, 33575, 48427, 52105, 242135, 260525, 823259, 1210675, 4116295, 20581475]

約数ペア:

[(1, 20581475), (5, 4116295), (17, 1210675), (25, 823259), (79, 260525), (85, 242135), (395, 52105), (425, 48427), (613, 33575), (1343, 15325), (1975, 10421), (3065, 6715)]