20809728

素因数分解:

$2^{11}\times 3^2\times {\mathrm{1129}}^1$

素因数の和:1157

約数の個数: 72

約数和(自身を含む): 60155550

約数和(自身を除く): 39345822

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 64, 72, 96, 128, 144, 192, 256, 288, 384, 512, 576, 768, 1024, 1129, 1152, 1536, 2048, 2258, 2304, 3072, 3387, 4516, 4608, 6144, 6774, 9032, 9216, 10161, 13548, 18064, 18432, 20322, 27096, 36128, 40644, 54192, 72256, 81288, 108384, 144512, 162576, 216768, 289024, 325152, 433536, 578048, 650304, 867072, 1156096, 1300608, 1734144, 2312192, 2601216, 3468288, 5202432, 6936576, 10404864, 20809728]

約数ペア:

[(1, 20809728), (2, 10404864), (3, 6936576), (4, 5202432), (6, 3468288), (8, 2601216), (9, 2312192), (12, 1734144), (16, 1300608), (18, 1156096), (24, 867072), (32, 650304), (36, 578048), (48, 433536), (64, 325152), (72, 289024), (96, 216768), (128, 162576), (144, 144512), (192, 108384), (256, 81288), (288, 72256), (384, 54192), (512, 40644), (576, 36128), (768, 27096), (1024, 20322), (1129, 18432), (1152, 18064), (1536, 13548), (2048, 10161), (2258, 9216), (2304, 9032), (3072, 6774), (3387, 6144), (4516, 4608)]