2019900920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1174361}}^1$

素因数の和:1174415

約数の個数: 32

約数和(自身を含む): 4650473520

約数和(自身を除く): 2630572600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 1174361, 2348722, 4697444, 5871805, 9394888, 11743610, 23487220, 46974440, 50497523, 100995046, 201990092, 252487615, 403980184, 504975230, 1009950460, 2019900920]

約数ペア:

[(1, 2019900920), (2, 1009950460), (4, 504975230), (5, 403980184), (8, 252487615), (10, 201990092), (20, 100995046), (40, 50497523), (43, 46974440), (86, 23487220), (172, 11743610), (215, 9394888), (344, 5871805), (430, 4697444), (860, 2348722), (1720, 1174361)]