201318640

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{23087}}^1$

素因数の和:23209

約数の個数: 40

約数和(自身を含む): 472380480

約数和(自身を除く): 271061840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720, 23087, 46174, 92348, 115435, 184696, 230870, 369392, 461740, 923480, 1846960, 2516483, 5032966, 10065932, 12582415, 20131864, 25164830, 40263728, 50329660, 100659320, 201318640]

約数ペア:

[(1, 201318640), (2, 100659320), (4, 50329660), (5, 40263728), (8, 25164830), (10, 20131864), (16, 12582415), (20, 10065932), (40, 5032966), (80, 2516483), (109, 1846960), (218, 923480), (436, 461740), (545, 369392), (872, 230870), (1090, 184696), (1744, 115435), (2180, 92348), (4360, 46174), (8720, 23087)]