20205920

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18041}}^1$

素因数の和:18063

約数の個数: 48

約数和(自身を含む): 54559008

約数和(自身を除く): 34353088

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18041, 36082, 72164, 90205, 126287, 144328, 180410, 252574, 288656, 360820, 505148, 577312, 631435, 721640, 1010296, 1262870, 1443280, 2020592, 2525740, 2886560, 4041184, 5051480, 10102960, 20205920]

約数ペア:

[(1, 20205920), (2, 10102960), (4, 5051480), (5, 4041184), (7, 2886560), (8, 2525740), (10, 2020592), (14, 1443280), (16, 1262870), (20, 1010296), (28, 721640), (32, 631435), (35, 577312), (40, 505148), (56, 360820), (70, 288656), (80, 252574), (112, 180410), (140, 144328), (160, 126287), (224, 90205), (280, 72164), (560, 36082), (1120, 18041)]