258399315

素因数分解:

$3^4\times 5^1\times {\mathrm{638023}}^1$

素因数の和:638040

約数の個数: 20

約数和(自身を含む): 463205424

約数和(自身を除く): 204806109

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 638023, 1914069, 3190115, 5742207, 9570345, 17226621, 28711035, 51679863, 86133105, 258399315]

約数ペア:

[(1, 258399315), (3, 86133105), (5, 51679863), (9, 28711035), (15, 17226621), (27, 9570345), (45, 5742207), (81, 3190115), (135, 1914069), (405, 638023)]