18985275

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{4441}}^1$

素因数の和:4476

約数の個数: 36

約数和(自身を含む): 35802520

約数和(自身を除く): 16817245

約数列:

[1, 3, 5, 9, 15, 19, 25, 45, 57, 75, 95, 171, 225, 285, 475, 855, 1425, 4275, 4441, 13323, 22205, 39969, 66615, 84379, 111025, 199845, 253137, 333075, 421895, 759411, 999225, 1265685, 2109475, 3797055, 6328425, 18985275]

約数ペア:

[(1, 18985275), (3, 6328425), (5, 3797055), (9, 2109475), (15, 1265685), (19, 999225), (25, 759411), (45, 421895), (57, 333075), (75, 253137), (95, 199845), (171, 111025), (225, 84379), (285, 66615), (475, 39969), (855, 22205), (1425, 13323), (4275, 4441)]