209213215

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{12539}}^1$

素因数の和:12662

約数の個数: 16

約数和(自身を含む): 260029440

約数和(自身を除く): 50816225

約数列:

[1, 5, 47, 71, 235, 355, 3337, 12539, 16685, 62695, 589333, 890269, 2946665, 4451345, 41842643, 209213215]

約数ペア:

[(1, 209213215), (5, 41842643), (47, 4451345), (71, 2946665), (235, 890269), (355, 589333), (3337, 62695), (12539, 16685)]