20644960

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18433}}^1$

素因数の和:18455

約数の個数: 48

約数和(自身を含む): 55744416

約数和(自身を除く): 35099456

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, 18433, 36866, 73732, 92165, 129031, 147464, 184330, 258062, 294928, 368660, 516124, 589856, 645155, 737320, 1032248, 1290310, 1474640, 2064496, 2580620, 2949280, 4128992, 5161240, 10322480, 20644960]

約数ペア:

[(1, 20644960), (2, 10322480), (4, 5161240), (5, 4128992), (7, 2949280), (8, 2580620), (10, 2064496), (14, 1474640), (16, 1290310), (20, 1032248), (28, 737320), (32, 645155), (35, 589856), (40, 516124), (56, 368660), (70, 294928), (80, 258062), (112, 184330), (140, 147464), (160, 129031), (224, 92165), (280, 73732), (560, 36866), (1120, 18433)]