20665864

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{281}}^1\times {\mathrm{317}}^1$

素因数の和:633

約数の個数: 32

約数和(自身を含む): 40354200

約数和(自身を除く): 19688336

約数列:

[1, 2, 4, 8, 29, 58, 116, 232, 281, 317, 562, 634, 1124, 1268, 2248, 2536, 8149, 9193, 16298, 18386, 32596, 36772, 65192, 73544, 89077, 178154, 356308, 712616, 2583233, 5166466, 10332932, 20665864]

約数ペア:

[(1, 20665864), (2, 10332932), (4, 5166466), (8, 2583233), (29, 712616), (58, 356308), (116, 178154), (232, 89077), (281, 73544), (317, 65192), (562, 36772), (634, 32596), (1124, 18386), (1268, 16298), (2248, 9193), (2536, 8149)]