20778436

素因数分解:

$2^2\times 7^1\times {\mathrm{211}}^1\times {\mathrm{3517}}^1$

素因数の和:3739

約数の個数: 24

約数和(自身を含む): 41765696

約数和(自身を除く): 20987260

約数列:

[1, 2, 4, 7, 14, 28, 211, 422, 844, 1477, 2954, 3517, 5908, 7034, 14068, 24619, 49238, 98476, 742087, 1484174, 2968348, 5194609, 10389218, 20778436]

約数ペア:

[(1, 20778436), (2, 10389218), (4, 5194609), (7, 2968348), (14, 1484174), (28, 742087), (211, 98476), (422, 49238), (844, 24619), (1477, 14068), (2954, 7034), (3517, 5908)]