42840040

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{24907}}^1$

素因数の和:24961

約数の個数: 32

約数和(自身を含む): 98635680

約数和(自身を除く): 55795640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 24907, 49814, 99628, 124535, 199256, 249070, 498140, 996280, 1071001, 2142002, 4284004, 5355005, 8568008, 10710010, 21420020, 42840040]

約数ペア:

[(1, 42840040), (2, 21420020), (4, 10710010), (5, 8568008), (8, 5355005), (10, 4284004), (20, 2142002), (40, 1071001), (43, 996280), (86, 498140), (172, 249070), (215, 199256), (344, 124535), (430, 99628), (860, 49814), (1720, 24907)]