20163920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{36007}}^1$

素因数の和:36027

約数の個数: 40

約数和(自身を含む): 53579904

約数和(自身を除く): 33415984

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 36007, 72014, 144028, 180035, 252049, 288056, 360070, 504098, 576112, 720140, 1008196, 1260245, 1440280, 2016392, 2520490, 2880560, 4032784, 5040980, 10081960, 20163920]

約数ペア:

[(1, 20163920), (2, 10081960), (4, 5040980), (5, 4032784), (7, 2880560), (8, 2520490), (10, 2016392), (14, 1440280), (16, 1260245), (20, 1008196), (28, 720140), (35, 576112), (40, 504098), (56, 360070), (70, 288056), (80, 252049), (112, 180035), (140, 144028), (280, 72014), (560, 36007)]