20960912

素因数分解:

$2^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:220

約数の個数: 80

約数和(自身を含む): 49520640

約数和(自身を除く): 28559728

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 46, 56, 79, 92, 103, 112, 158, 161, 184, 206, 316, 322, 368, 412, 553, 632, 644, 721, 824, 1106, 1264, 1288, 1442, 1648, 1817, 2212, 2369, 2576, 2884, 3634, 4424, 4738, 5768, 7268, 8137, 8848, 9476, 11536, 12719, 14536, 16274, 16583, 18952, 25438, 29072, 32548, 33166, 37904, 50876, 56959, 65096, 66332, 101752, 113918, 130192, 132664, 187151, 203504, 227836, 265328, 374302, 455672, 748604, 911344, 1310057, 1497208, 2620114, 2994416, 5240228, 10480456, 20960912]

約数ペア:

[(1, 20960912), (2, 10480456), (4, 5240228), (7, 2994416), (8, 2620114), (14, 1497208), (16, 1310057), (23, 911344), (28, 748604), (46, 455672), (56, 374302), (79, 265328), (92, 227836), (103, 203504), (112, 187151), (158, 132664), (161, 130192), (184, 113918), (206, 101752), (316, 66332), (322, 65096), (368, 56959), (412, 50876), (553, 37904), (632, 33166), (644, 32548), (721, 29072), (824, 25438), (1106, 18952), (1264, 16583), (1288, 16274), (1442, 14536), (1648, 12719), (1817, 11536), (2212, 9476), (2369, 8848), (2576, 8137), (2884, 7268), (3634, 5768), (4424, 4738)]