21319918

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{7027}}^1$

素因数の和:7107

約数の個数: 16

約数和(自身を含む): 33650064

約数和(自身を除く): 12330146

約数列:

[1, 2, 37, 41, 74, 82, 1517, 3034, 7027, 14054, 259999, 288107, 519998, 576214, 10659959, 21319918]

約数ペア:

[(1, 21319918), (2, 10659959), (37, 576214), (41, 519998), (74, 288107), (82, 259999), (1517, 14054), (3034, 7027)]