28249640

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{3167}}^1$

素因数の和:3401

約数の個数: 32

約数和(自身を含む): 63866880

約数和(自身を除く): 35617240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 3167, 4460, 6334, 8920, 12668, 15835, 25336, 31670, 63340, 126680, 706241, 1412482, 2824964, 3531205, 5649928, 7062410, 14124820, 28249640]

約数ペア:

[(1, 28249640), (2, 14124820), (4, 7062410), (5, 5649928), (8, 3531205), (10, 2824964), (20, 1412482), (40, 706241), (223, 126680), (446, 63340), (892, 31670), (1115, 25336), (1784, 15835), (2230, 12668), (3167, 8920), (4460, 6334)]