20790040

素因数分解:

$2^3\times 5^1\times {\mathrm{307}}^1\times {\mathrm{1693}}^1$

素因数の和:2011

約数の個数: 32

約数和(自身を含む): 46957680

約数和(自身を除く): 26167640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 307, 614, 1228, 1535, 1693, 2456, 3070, 3386, 6140, 6772, 8465, 12280, 13544, 16930, 33860, 67720, 519751, 1039502, 2079004, 2598755, 4158008, 5197510, 10395020, 20790040]

約数ペア:

[(1, 20790040), (2, 10395020), (4, 5197510), (5, 4158008), (8, 2598755), (10, 2079004), (20, 1039502), (40, 519751), (307, 67720), (614, 33860), (1228, 16930), (1535, 13544), (1693, 12280), (2456, 8465), (3070, 6772), (3386, 6140)]