28179160

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1811}}^1$

素因数の和:2211

約数の個数: 32

約数和(自身を含む): 63601200

約数和(自身を除く): 35422040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1556, 1811, 1945, 3112, 3622, 3890, 7244, 7780, 9055, 14488, 15560, 18110, 36220, 72440, 704479, 1408958, 2817916, 3522395, 5635832, 7044790, 14089580, 28179160]

約数ペア:

[(1, 28179160), (2, 14089580), (4, 7044790), (5, 5635832), (8, 3522395), (10, 2817916), (20, 1408958), (40, 704479), (389, 72440), (778, 36220), (1556, 18110), (1811, 15560), (1945, 14488), (3112, 9055), (3622, 7780), (3890, 7244)]