21455504

素因数分解:

$2^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{8329}}^1$

素因数の和:8367

約数の個数: 40

約数和(自身を含む): 49580160

約数和(自身を除く): 28124656

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 46, 56, 92, 112, 161, 184, 322, 368, 644, 1288, 2576, 8329, 16658, 33316, 58303, 66632, 116606, 133264, 191567, 233212, 383134, 466424, 766268, 932848, 1340969, 1532536, 2681938, 3065072, 5363876, 10727752, 21455504]

約数ペア:

[(1, 21455504), (2, 10727752), (4, 5363876), (7, 3065072), (8, 2681938), (14, 1532536), (16, 1340969), (23, 932848), (28, 766268), (46, 466424), (56, 383134), (92, 233212), (112, 191567), (161, 133264), (184, 116606), (322, 66632), (368, 58303), (644, 33316), (1288, 16658), (2576, 8329)]