20267620

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{23567}}^1$

素因数の和:23619

約数の個数: 24

約数和(自身を含む): 43553664

約数和(自身を除く): 23286044

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 23567, 47134, 94268, 117835, 235670, 471340, 1013381, 2026762, 4053524, 5066905, 10133810, 20267620]

約数ペア:

[(1, 20267620), (2, 10133810), (4, 5066905), (5, 4053524), (10, 2026762), (20, 1013381), (43, 471340), (86, 235670), (172, 117835), (215, 94268), (430, 47134), (860, 23567)]