20044791

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1$

素因数の和:236

約数の個数: 48

約数和(自身を含む): 33546240

約数和(自身を除く): 13501449

約数列:

[1, 3, 9, 13, 19, 39, 57, 71, 117, 127, 171, 213, 247, 381, 639, 741, 923, 1143, 1349, 1651, 2223, 2413, 2769, 4047, 4953, 7239, 8307, 9017, 12141, 14859, 17537, 21717, 27051, 31369, 52611, 81153, 94107, 117221, 157833, 171323, 282321, 351663, 513969, 1054989, 1541907, 2227199, 6681597, 20044791]

約数ペア:

[(1, 20044791), (3, 6681597), (9, 2227199), (13, 1541907), (19, 1054989), (39, 513969), (57, 351663), (71, 282321), (117, 171323), (127, 157833), (171, 117221), (213, 94107), (247, 81153), (381, 52611), (639, 31369), (741, 27051), (923, 21717), (1143, 17537), (1349, 14859), (1651, 12141), (2223, 9017), (2413, 8307), (2769, 7239), (4047, 4953)]