81779128

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{271}}^1\times {\mathrm{563}}^1$

素因数の和:907

約数の個数: 32

約数和(自身を含む): 156476160

約数和(自身を除く): 74697032

約数列:

[1, 2, 4, 8, 67, 134, 268, 271, 536, 542, 563, 1084, 1126, 2168, 2252, 4504, 18157, 36314, 37721, 72628, 75442, 145256, 150884, 152573, 301768, 305146, 610292, 1220584, 10222391, 20444782, 40889564, 81779128]

約数ペア:

[(1, 81779128), (2, 40889564), (4, 20444782), (8, 10222391), (67, 1220584), (134, 610292), (268, 305146), (271, 301768), (536, 152573), (542, 150884), (563, 145256), (1084, 75442), (1126, 72628), (2168, 37721), (2252, 36314), (4504, 18157)]