21138128

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{120103}}^1$

素因数の和:120122

約数の個数: 20

約数和(自身を含む): 44678688

約数和(自身を除く): 23540560

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 120103, 240206, 480412, 960824, 1321133, 1921648, 2642266, 5284532, 10569064, 21138128]

約数ペア:

[(1, 21138128), (2, 10569064), (4, 5284532), (8, 2642266), (11, 1921648), (16, 1321133), (22, 960824), (44, 480412), (88, 240206), (176, 120103)]