20728580

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{24103}}^1$

素因数の和:24155

約数の個数: 24

約数和(自身を含む): 44544192

約数和(自身を除く): 23815612

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 24103, 48206, 96412, 120515, 241030, 482060, 1036429, 2072858, 4145716, 5182145, 10364290, 20728580]

約数ペア:

[(1, 20728580), (2, 10364290), (4, 5182145), (5, 4145716), (10, 2072858), (20, 1036429), (43, 482060), (86, 241030), (172, 120515), (215, 96412), (430, 48206), (860, 24103)]