20685800

素因数分解:

$2^3\times 5^2\times {\mathrm{293}}^1\times {\mathrm{353}}^1$

素因数の和:662

約数の個数: 48

約数和(自身を含む): 48395340

約数和(自身を除く): 27709540

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 293, 353, 586, 706, 1172, 1412, 1465, 1765, 2344, 2824, 2930, 3530, 5860, 7060, 7325, 8825, 11720, 14120, 14650, 17650, 29300, 35300, 58600, 70600, 103429, 206858, 413716, 517145, 827432, 1034290, 2068580, 2585725, 4137160, 5171450, 10342900, 20685800]

約数ペア:

[(1, 20685800), (2, 10342900), (4, 5171450), (5, 4137160), (8, 2585725), (10, 2068580), (20, 1034290), (25, 827432), (40, 517145), (50, 413716), (100, 206858), (200, 103429), (293, 70600), (353, 58600), (586, 35300), (706, 29300), (1172, 17650), (1412, 14650), (1465, 14120), (1765, 11720), (2344, 8825), (2824, 7325), (2930, 7060), (3530, 5860)]