19680885

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1453}}^1$

素因数の和:1514

約数の個数: 48

約数和(自身を含む): 39921024

約数和(自身を除く): 20240139

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 43, 45, 63, 105, 129, 215, 301, 315, 387, 645, 903, 1453, 1505, 1935, 2709, 4359, 4515, 7265, 10171, 13077, 13545, 21795, 30513, 50855, 62479, 65385, 91539, 152565, 187437, 312395, 437353, 457695, 562311, 937185, 1312059, 2186765, 2811555, 3936177, 6560295, 19680885]

約数ペア:

[(1, 19680885), (3, 6560295), (5, 3936177), (7, 2811555), (9, 2186765), (15, 1312059), (21, 937185), (35, 562311), (43, 457695), (45, 437353), (63, 312395), (105, 187437), (129, 152565), (215, 91539), (301, 65385), (315, 62479), (387, 50855), (645, 30513), (903, 21795), (1453, 13545), (1505, 13077), (1935, 10171), (2709, 7265), (4359, 4515)]