20428740

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{37831}}^1$

素因数の和:37849

約数の個数: 48

約数和(自身を含む): 63557760

約数和(自身を除く): 43129020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 37831, 75662, 113493, 151324, 189155, 226986, 340479, 378310, 453972, 567465, 680958, 756620, 1021437, 1134930, 1361916, 1702395, 2042874, 2269860, 3404790, 4085748, 5107185, 6809580, 10214370, 20428740]

約数ペア:

[(1, 20428740), (2, 10214370), (3, 6809580), (4, 5107185), (5, 4085748), (6, 3404790), (9, 2269860), (10, 2042874), (12, 1702395), (15, 1361916), (18, 1134930), (20, 1021437), (27, 756620), (30, 680958), (36, 567465), (45, 453972), (54, 378310), (60, 340479), (90, 226986), (108, 189155), (135, 151324), (180, 113493), (270, 75662), (540, 37831)]