28720720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{51287}}^1$

素因数の和:51307

約数の個数: 40

約数和(自身を含む): 76316544

約数和(自身を除く): 47595824

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 51287, 102574, 205148, 256435, 359009, 410296, 512870, 718018, 820592, 1025740, 1436036, 1795045, 2051480, 2872072, 3590090, 4102960, 5744144, 7180180, 14360360, 28720720]

約数ペア:

[(1, 28720720), (2, 14360360), (4, 7180180), (5, 5744144), (7, 4102960), (8, 3590090), (10, 2872072), (14, 2051480), (16, 1795045), (20, 1436036), (28, 1025740), (35, 820592), (40, 718018), (56, 512870), (70, 410296), (80, 359009), (112, 256435), (140, 205148), (280, 102574), (560, 51287)]