28972485

素因数分解:

$3^4\times 5^1\times {\mathrm{71537}}^1$

素因数の和:71554

約数の個数: 20

約数和(自身を含む): 51936588

約数和(自身を除く): 22964103

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 71537, 214611, 357685, 643833, 1073055, 1931499, 3219165, 5794497, 9657495, 28972485]

約数ペア:

[(1, 28972485), (3, 9657495), (5, 5794497), (9, 3219165), (15, 1931499), (27, 1073055), (45, 643833), (81, 357685), (135, 214611), (405, 71537)]