20831080

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{1237}}^1$

素因数の和:1669

約数の個数: 32

約数和(自身を含む): 47019240

約数和(自身を除く): 26188160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1237, 1684, 2105, 2474, 3368, 4210, 4948, 6185, 8420, 9896, 12370, 16840, 24740, 49480, 520777, 1041554, 2083108, 2603885, 4166216, 5207770, 10415540, 20831080]

約数ペア:

[(1, 20831080), (2, 10415540), (4, 5207770), (5, 4166216), (8, 2603885), (10, 2083108), (20, 1041554), (40, 520777), (421, 49480), (842, 24740), (1237, 16840), (1684, 12370), (2105, 9896), (2474, 8420), (3368, 6185), (4210, 4948)]