4640720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{8287}}^1$

素因数の和:8307

約数の個数: 40

約数和(自身を含む): 12332544

約数和(自身を除く): 7691824

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 8287, 16574, 33148, 41435, 58009, 66296, 82870, 116018, 132592, 165740, 232036, 290045, 331480, 464072, 580090, 662960, 928144, 1160180, 2320360, 4640720]

約数ペア:

[(1, 4640720), (2, 2320360), (4, 1160180), (5, 928144), (7, 662960), (8, 580090), (10, 464072), (14, 331480), (16, 290045), (20, 232036), (28, 165740), (35, 132592), (40, 116018), (56, 82870), (70, 66296), (80, 58009), (112, 41435), (140, 33148), (280, 16574), (560, 8287)]