21827020

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{17891}}^1$

素因数の和:17961

約数の個数: 24

約数和(自身を含む): 46590768

約数和(自身を除く): 24763748

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 17891, 35782, 71564, 89455, 178910, 357820, 1091351, 2182702, 4365404, 5456755, 10913510, 21827020]

約数ペア:

[(1, 21827020), (2, 10913510), (4, 5456755), (5, 4365404), (10, 2182702), (20, 1091351), (61, 357820), (122, 178910), (244, 89455), (305, 71564), (610, 35782), (1220, 17891)]