28564040

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{16607}}^1$

素因数の和:16661

約数の個数: 32

約数和(自身を含む): 65767680

約数和(自身を除く): 37203640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 16607, 33214, 66428, 83035, 132856, 166070, 332140, 664280, 714101, 1428202, 2856404, 3570505, 5712808, 7141010, 14282020, 28564040]

約数ペア:

[(1, 28564040), (2, 14282020), (4, 7141010), (5, 5712808), (8, 3570505), (10, 2856404), (20, 1428202), (40, 714101), (43, 664280), (86, 332140), (172, 166070), (215, 132856), (344, 83035), (430, 66428), (860, 33214), (1720, 16607)]