20900180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149287}}^1$

素因数の和:149303

約数の個数: 24

約数和(自身を含む): 50160768

約数和(自身を除く): 29260588

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149287, 298574, 597148, 746435, 1045009, 1492870, 2090018, 2985740, 4180036, 5225045, 10450090, 20900180]

約数ペア:

[(1, 20900180), (2, 10450090), (4, 5225045), (5, 4180036), (7, 2985740), (10, 2090018), (14, 1492870), (20, 1045009), (28, 746435), (35, 597148), (70, 298574), (140, 149287)]