21197554

素因数分解:

$2^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{3449}}^1$

素因数の和:3897

約数の個数: 16

約数和(自身を含む): 36432000

約数和(自身を除く): 15234446

約数列:

[1, 2, 7, 14, 439, 878, 3073, 3449, 6146, 6898, 24143, 48286, 1514111, 3028222, 10598777, 21197554]

約数ペア:

[(1, 21197554), (2, 10598777), (7, 3028222), (14, 1514111), (439, 48286), (878, 24143), (3073, 6898), (3449, 6146)]