20684500

素因数分解:

$2^2\times 5^3\times {\mathrm{41}}^1\times {\mathrm{1009}}^1$

素因数の和:1069

約数の個数: 48

約数和(自身を含む): 46322640

約数和(自身を除く): 25638140

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 125, 164, 205, 250, 410, 500, 820, 1009, 1025, 2018, 2050, 4036, 4100, 5045, 5125, 10090, 10250, 20180, 20500, 25225, 41369, 50450, 82738, 100900, 126125, 165476, 206845, 252250, 413690, 504500, 827380, 1034225, 2068450, 4136900, 5171125, 10342250, 20684500]

約数ペア:

[(1, 20684500), (2, 10342250), (4, 5171125), (5, 4136900), (10, 2068450), (20, 1034225), (25, 827380), (41, 504500), (50, 413690), (82, 252250), (100, 206845), (125, 165476), (164, 126125), (205, 100900), (250, 82738), (410, 50450), (500, 41369), (820, 25225), (1009, 20500), (1025, 20180), (2018, 10250), (2050, 10090), (4036, 5125), (4100, 5045)]