20704040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73943}}^1$

素因数の和:73961

約数の個数: 32

約数和(自身を含む): 53239680

約数和(自身を除く): 32535640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 73943, 147886, 295772, 369715, 517601, 591544, 739430, 1035202, 1478860, 2070404, 2588005, 2957720, 4140808, 5176010, 10352020, 20704040]

約数ペア:

[(1, 20704040), (2, 10352020), (4, 5176010), (5, 4140808), (7, 2957720), (8, 2588005), (10, 2070404), (14, 1478860), (20, 1035202), (28, 739430), (35, 591544), (40, 517601), (56, 369715), (70, 295772), (140, 147886), (280, 73943)]