20901664

素因数分解:

$2^5\times 7^1\times {\mathrm{23}}^1\times {\mathrm{4057}}^1$

素因数の和:4097

約数の個数: 48

約数和(自身を含む): 49085568

約数和(自身を除く): 28183904

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 56, 92, 112, 161, 184, 224, 322, 368, 644, 736, 1288, 2576, 4057, 5152, 8114, 16228, 28399, 32456, 56798, 64912, 93311, 113596, 129824, 186622, 227192, 373244, 454384, 653177, 746488, 908768, 1306354, 1492976, 2612708, 2985952, 5225416, 10450832, 20901664]

約数ペア:

[(1, 20901664), (2, 10450832), (4, 5225416), (7, 2985952), (8, 2612708), (14, 1492976), (16, 1306354), (23, 908768), (28, 746488), (32, 653177), (46, 454384), (56, 373244), (92, 227192), (112, 186622), (161, 129824), (184, 113596), (224, 93311), (322, 64912), (368, 56798), (644, 32456), (736, 28399), (1288, 16228), (2576, 8114), (4057, 5152)]