28381041

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{751}}^1$

素因数の和:806

約数の個数: 48

約数和(自身を含む): 49271040

約数和(自身を除く): 20889999

約数列:

[1, 3, 9, 13, 17, 19, 39, 51, 57, 117, 153, 171, 221, 247, 323, 663, 741, 751, 969, 1989, 2223, 2253, 2907, 4199, 6759, 9763, 12597, 12767, 14269, 29289, 37791, 38301, 42807, 87867, 114903, 128421, 165971, 185497, 242573, 497913, 556491, 727719, 1493739, 1669473, 2183157, 3153449, 9460347, 28381041]

約数ペア:

[(1, 28381041), (3, 9460347), (9, 3153449), (13, 2183157), (17, 1669473), (19, 1493739), (39, 727719), (51, 556491), (57, 497913), (117, 242573), (153, 185497), (171, 165971), (221, 128421), (247, 114903), (323, 87867), (663, 42807), (741, 38301), (751, 37791), (969, 29289), (1989, 14269), (2223, 12767), (2253, 12597), (2907, 9763), (4199, 6759)]