28976560

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{3323}}^1$

素因数の和:3445

約数の個数: 40

約数和(自身を含む): 68009040

約数和(自身を除く): 39032480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 3323, 4360, 6646, 8720, 13292, 16615, 26584, 33230, 53168, 66460, 132920, 265840, 362207, 724414, 1448828, 1811035, 2897656, 3622070, 5795312, 7244140, 14488280, 28976560]

約数ペア:

[(1, 28976560), (2, 14488280), (4, 7244140), (5, 5795312), (8, 3622070), (10, 2897656), (16, 1811035), (20, 1448828), (40, 724414), (80, 362207), (109, 265840), (218, 132920), (436, 66460), (545, 53168), (872, 33230), (1090, 26584), (1744, 16615), (2180, 13292), (3323, 8720), (4360, 6646)]