18081280

素因数分解:

$2^9\times 5^1\times 7^1\times {\mathrm{1009}}^1$

素因数の和:1039

約数の個数: 80

約数和(自身を含む): 49595040

約数和(自身を除く): 31513760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 512, 560, 640, 896, 1009, 1120, 1280, 1792, 2018, 2240, 2560, 3584, 4036, 4480, 5045, 7063, 8072, 8960, 10090, 14126, 16144, 17920, 20180, 28252, 32288, 35315, 40360, 56504, 64576, 70630, 80720, 113008, 129152, 141260, 161440, 226016, 258304, 282520, 322880, 452032, 516608, 565040, 645760, 904064, 1130080, 1291520, 1808128, 2260160, 2583040, 3616256, 4520320, 9040640, 18081280]

約数ペア:

[(1, 18081280), (2, 9040640), (4, 4520320), (5, 3616256), (7, 2583040), (8, 2260160), (10, 1808128), (14, 1291520), (16, 1130080), (20, 904064), (28, 645760), (32, 565040), (35, 516608), (40, 452032), (56, 322880), (64, 282520), (70, 258304), (80, 226016), (112, 161440), (128, 141260), (140, 129152), (160, 113008), (224, 80720), (256, 70630), (280, 64576), (320, 56504), (448, 40360), (512, 35315), (560, 32288), (640, 28252), (896, 20180), (1009, 17920), (1120, 16144), (1280, 14126), (1792, 10090), (2018, 8960), (2240, 8072), (2560, 7063), (3584, 5045), (4036, 4480)]