19680165

素因数分解:

$3^4\times 5^1\times {\mathrm{48593}}^1$

素因数の和:48610

約数の個数: 20

約数和(自身を含む): 35279244

約数和(自身を除く): 15599079

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 48593, 145779, 242965, 437337, 728895, 1312011, 2186685, 3936033, 6560055, 19680165]

約数ペア:

[(1, 19680165), (3, 6560055), (5, 3936033), (9, 2186685), (15, 1312011), (27, 728895), (45, 437337), (81, 242965), (135, 145779), (405, 48593)]