20875904

素因数分解:

$2^7\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1013}}^1$

素因数の和:1057

約数の個数: 64

約数和(自身を含む): 49645440

約数和(自身を除く): 28769536

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 56, 64, 92, 112, 128, 161, 184, 224, 322, 368, 448, 644, 736, 896, 1013, 1288, 1472, 2026, 2576, 2944, 4052, 5152, 7091, 8104, 10304, 14182, 16208, 20608, 23299, 28364, 32416, 46598, 56728, 64832, 93196, 113456, 129664, 163093, 186392, 226912, 326186, 372784, 453824, 652372, 745568, 907648, 1304744, 1491136, 2609488, 2982272, 5218976, 10437952, 20875904]

約数ペア:

[(1, 20875904), (2, 10437952), (4, 5218976), (7, 2982272), (8, 2609488), (14, 1491136), (16, 1304744), (23, 907648), (28, 745568), (32, 652372), (46, 453824), (56, 372784), (64, 326186), (92, 226912), (112, 186392), (128, 163093), (161, 129664), (184, 113456), (224, 93196), (322, 64832), (368, 56728), (448, 46598), (644, 32416), (736, 28364), (896, 23299), (1013, 20608), (1288, 16208), (1472, 14182), (2026, 10304), (2576, 8104), (2944, 7091), (4052, 5152)]