21938600

素因数分解:

$2^3\times 5^2\times {\mathrm{43}}^1\times {\mathrm{2551}}^1$

素因数の和:2610

約数の個数: 48

約数和(自身を含む): 52213920

約数和(自身を除く): 30275320

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 172, 200, 215, 344, 430, 860, 1075, 1720, 2150, 2551, 4300, 5102, 8600, 10204, 12755, 20408, 25510, 51020, 63775, 102040, 109693, 127550, 219386, 255100, 438772, 510200, 548465, 877544, 1096930, 2193860, 2742325, 4387720, 5484650, 10969300, 21938600]

約数ペア:

[(1, 21938600), (2, 10969300), (4, 5484650), (5, 4387720), (8, 2742325), (10, 2193860), (20, 1096930), (25, 877544), (40, 548465), (43, 510200), (50, 438772), (86, 255100), (100, 219386), (172, 127550), (200, 109693), (215, 102040), (344, 63775), (430, 51020), (860, 25510), (1075, 20408), (1720, 12755), (2150, 10204), (2551, 8600), (4300, 5102)]