21336440

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{7307}}^1$

素因数の和:7391

約数の個数: 32

約数和(自身を含む): 48671280

約数和(自身を除く): 27334840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 7307, 14614, 29228, 36535, 58456, 73070, 146140, 292280, 533411, 1066822, 2133644, 2667055, 4267288, 5334110, 10668220, 21336440]

約数ペア:

[(1, 21336440), (2, 10668220), (4, 5334110), (5, 4267288), (8, 2667055), (10, 2133644), (20, 1066822), (40, 533411), (73, 292280), (146, 146140), (292, 73070), (365, 58456), (584, 36535), (730, 29228), (1460, 14614), (2920, 7307)]