20105239

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{3391}}^1$

素因数の和:3427

約数の個数: 18

約数和(自身を含む): 25714752

約数和(自身を除く): 5609513

約数列:

[1, 7, 11, 49, 77, 121, 539, 847, 3391, 5929, 23737, 37301, 166159, 261107, 410311, 1827749, 2872177, 20105239]

約数ペア:

[(1, 20105239), (7, 2872177), (11, 1827749), (49, 410311), (77, 261107), (121, 166159), (539, 37301), (847, 23737), (3391, 5929)]