28720275

素因数分解:

$3^1\times 5^2\times {\mathrm{569}}^1\times {\mathrm{673}}^1$

素因数の和:1255

約数の個数: 24

約数和(自身を含む): 47638320

約数和(自身を除く): 18918045

約数列:

[1, 3, 5, 15, 25, 75, 569, 673, 1707, 2019, 2845, 3365, 8535, 10095, 14225, 16825, 42675, 50475, 382937, 1148811, 1914685, 5744055, 9573425, 28720275]

約数ペア:

[(1, 28720275), (3, 9573425), (5, 5744055), (15, 1914685), (25, 1148811), (75, 382937), (569, 50475), (673, 42675), (1707, 16825), (2019, 14225), (2845, 10095), (3365, 8535)]