2020971520

素因数分解:

$2^{10}\times 5^1\times {\mathrm{394721}}^1$

素因数の和:394746

約数の個数: 44

約数和(自身を含む): 4847975604

約数和(自身を除く): 2827004084

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 5120, 394721, 789442, 1578884, 1973605, 3157768, 3947210, 6315536, 7894420, 12631072, 15788840, 25262144, 31577680, 50524288, 63155360, 101048576, 126310720, 202097152, 252621440, 404194304, 505242880, 1010485760, 2020971520]

約数ペア:

[(1, 2020971520), (2, 1010485760), (4, 505242880), (5, 404194304), (8, 252621440), (10, 202097152), (16, 126310720), (20, 101048576), (32, 63155360), (40, 50524288), (64, 31577680), (80, 25262144), (128, 15788840), (160, 12631072), (256, 7894420), (320, 6315536), (512, 3947210), (640, 3157768), (1024, 1973605), (1280, 1578884), (2560, 789442), (5120, 394721)]