20519800

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{14657}}^1$

素因数の和:14680

約数の個数: 48

約数和(自身を含む): 54527760

約数和(自身を除く): 34007960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 140, 175, 200, 280, 350, 700, 1400, 14657, 29314, 58628, 73285, 102599, 117256, 146570, 205198, 293140, 366425, 410396, 512995, 586280, 732850, 820792, 1025990, 1465700, 2051980, 2564975, 2931400, 4103960, 5129950, 10259900, 20519800]

約数ペア:

[(1, 20519800), (2, 10259900), (4, 5129950), (5, 4103960), (7, 2931400), (8, 2564975), (10, 2051980), (14, 1465700), (20, 1025990), (25, 820792), (28, 732850), (35, 586280), (40, 512995), (50, 410396), (56, 366425), (70, 293140), (100, 205198), (140, 146570), (175, 117256), (200, 102599), (280, 73285), (350, 58628), (700, 29314), (1400, 14657)]