20405728

素因数分解:

$2^5\times 7^1\times {\mathrm{91097}}^1$

素因数の和:91114

約数の個数: 24

約数和(自身を含む): 45913392

約数和(自身を除く): 25507664

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 224, 91097, 182194, 364388, 637679, 728776, 1275358, 1457552, 2550716, 2915104, 5101432, 10202864, 20405728]

約数ペア:

[(1, 20405728), (2, 10202864), (4, 5101432), (7, 2915104), (8, 2550716), (14, 1457552), (16, 1275358), (28, 728776), (32, 637679), (56, 364388), (112, 182194), (224, 91097)]