81481988

素因数分解:

$2^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{54907}}^1$

素因数の和:54971

約数の個数: 24

約数和(自身を含む): 166041792

約数和(自身を除く): 84559804

約数列:

[1, 2, 4, 7, 14, 28, 53, 106, 212, 371, 742, 1484, 54907, 109814, 219628, 384349, 768698, 1537396, 2910071, 5820142, 11640284, 20370497, 40740994, 81481988]

約数ペア:

[(1, 81481988), (2, 40740994), (4, 20370497), (7, 11640284), (14, 5820142), (28, 2910071), (53, 1537396), (106, 768698), (212, 384349), (371, 219628), (742, 109814), (1484, 54907)]