20995180

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{24413}}^1$

素因数の和:24465

約数の個数: 24

約数和(自身を含む): 45117072

約数和(自身を除く): 24121892

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 24413, 48826, 97652, 122065, 244130, 488260, 1049759, 2099518, 4199036, 5248795, 10497590, 20995180]

約数ペア:

[(1, 20995180), (2, 10497590), (4, 5248795), (5, 4199036), (10, 2099518), (20, 1049759), (43, 488260), (86, 244130), (172, 122065), (215, 97652), (430, 48826), (860, 24413)]