20688080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{36943}}^1$

素因数の和:36963

約数の個数: 40

約数和(自身を含む): 54972672

約数和(自身を除く): 34284592

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 36943, 73886, 147772, 184715, 258601, 295544, 369430, 517202, 591088, 738860, 1034404, 1293005, 1477720, 2068808, 2586010, 2955440, 4137616, 5172020, 10344040, 20688080]

約数ペア:

[(1, 20688080), (2, 10344040), (4, 5172020), (5, 4137616), (7, 2955440), (8, 2586010), (10, 2068808), (14, 1477720), (16, 1293005), (20, 1034404), (28, 738860), (35, 591088), (40, 517202), (56, 369430), (70, 295544), (80, 258601), (112, 184715), (140, 147772), (280, 73886), (560, 36943)]