21451388

素因数分解:

$2^2\times 7^1\times {\mathrm{599}}^1\times {\mathrm{1279}}^1$

素因数の和:1889

約数の個数: 24

約数和(自身を含む): 43008000

約数和(自身を除く): 21556612

約数列:

[1, 2, 4, 7, 14, 28, 599, 1198, 1279, 2396, 2558, 4193, 5116, 8386, 8953, 16772, 17906, 35812, 766121, 1532242, 3064484, 5362847, 10725694, 21451388]

約数ペア:

[(1, 21451388), (2, 10725694), (4, 5362847), (7, 3064484), (14, 1532242), (28, 766121), (599, 35812), (1198, 17906), (1279, 16772), (2396, 8953), (2558, 8386), (4193, 5116)]