20808515560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{185327}}^1$

素因数の和:185746

約数の個数: 64

約数和(自身を含む): 53641336320

約数和(自身を除く): 32832820760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 401, 802, 1604, 2005, 2807, 3208, 4010, 5614, 8020, 11228, 14035, 16040, 22456, 28070, 56140, 112280, 185327, 370654, 741308, 926635, 1297289, 1482616, 1853270, 2594578, 3706540, 5189156, 6486445, 7413080, 10378312, 12972890, 25945780, 51891560, 74316127, 148632254, 297264508, 371580635, 520212889, 594529016, 743161270, 1040425778, 1486322540, 2080851556, 2601064445, 2972645080, 4161703112, 5202128890, 10404257780, 20808515560]

約数ペア:

[(1, 20808515560), (2, 10404257780), (4, 5202128890), (5, 4161703112), (7, 2972645080), (8, 2601064445), (10, 2080851556), (14, 1486322540), (20, 1040425778), (28, 743161270), (35, 594529016), (40, 520212889), (56, 371580635), (70, 297264508), (140, 148632254), (280, 74316127), (401, 51891560), (802, 25945780), (1604, 12972890), (2005, 10378312), (2807, 7413080), (3208, 6486445), (4010, 5189156), (5614, 3706540), (8020, 2594578), (11228, 1853270), (14035, 1482616), (16040, 1297289), (22456, 926635), (28070, 741308), (56140, 370654), (112280, 185327)]