20181560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72077}}^1$

素因数の和:72095

約数の個数: 32

約数和(自身を含む): 51896160

約数和(自身を除く): 31714600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72077, 144154, 288308, 360385, 504539, 576616, 720770, 1009078, 1441540, 2018156, 2522695, 2883080, 4036312, 5045390, 10090780, 20181560]

約数ペア:

[(1, 20181560), (2, 10090780), (4, 5045390), (5, 4036312), (7, 2883080), (8, 2522695), (10, 2018156), (14, 1441540), (20, 1009078), (28, 720770), (35, 576616), (40, 504539), (56, 360385), (70, 288308), (140, 144154), (280, 72077)]