19966240

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{17827}}^1$

素因数の和:17849

約数の個数: 48

約数和(自身を含む): 53911872

約数和(自身を除く): 33945632

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, 17827, 35654, 71308, 89135, 124789, 142616, 178270, 249578, 285232, 356540, 499156, 570464, 623945, 713080, 998312, 1247890, 1426160, 1996624, 2495780, 2852320, 3993248, 4991560, 9983120, 19966240]

約数ペア:

[(1, 19966240), (2, 9983120), (4, 4991560), (5, 3993248), (7, 2852320), (8, 2495780), (10, 1996624), (14, 1426160), (16, 1247890), (20, 998312), (28, 713080), (32, 623945), (35, 570464), (40, 499156), (56, 356540), (70, 285232), (80, 249578), (112, 178270), (140, 142616), (160, 124789), (224, 89135), (280, 71308), (560, 35654), (1120, 17827)]