19686261

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{49339}}^1$

素因数の和:49368

約数の個数: 16

約数和(自身を含む): 31577600

約数和(自身を除く): 11891339

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 49339, 148017, 345373, 937441, 1036119, 2812323, 6562087, 19686261]

約数ペア:

[(1, 19686261), (3, 6562087), (7, 2812323), (19, 1036119), (21, 937441), (57, 345373), (133, 148017), (399, 49339)]