39920720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{71287}}^1$

素因数の和:71307

約数の個数: 40

約数和(自身を含む): 106076544

約数和(自身を除く): 66155824

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 71287, 142574, 285148, 356435, 499009, 570296, 712870, 998018, 1140592, 1425740, 1996036, 2495045, 2851480, 3992072, 4990090, 5702960, 7984144, 9980180, 19960360, 39920720]

約数ペア:

[(1, 39920720), (2, 19960360), (4, 9980180), (5, 7984144), (7, 5702960), (8, 4990090), (10, 3992072), (14, 2851480), (16, 2495045), (20, 1996036), (28, 1425740), (35, 1140592), (40, 998018), (56, 712870), (70, 570296), (80, 499009), (112, 356435), (140, 285148), (280, 142574), (560, 71287)]