20842724

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{12203}}^1$

素因数の和:12275

約数の個数: 24

約数和(自身を含む): 42372288

約数和(自身を除く): 21529564

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1708, 12203, 24406, 48812, 85421, 170842, 341684, 744383, 1488766, 2977532, 5210681, 10421362, 20842724]

約数ペア:

[(1, 20842724), (2, 10421362), (4, 5210681), (7, 2977532), (14, 1488766), (28, 744383), (61, 341684), (122, 170842), (244, 85421), (427, 48812), (854, 24406), (1708, 12203)]