217939967

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{6007}}^1$

素因数の和:6158

約数の個数: 16

約数和(自身を含む): 256084992

約数和(自身を除く): 38145025

約数列:

[1, 7, 71, 73, 497, 511, 5183, 6007, 36281, 42049, 426497, 438511, 2985479, 3069577, 31134281, 217939967]

約数ペア:

[(1, 217939967), (7, 31134281), (71, 3069577), (73, 2985479), (497, 438511), (511, 426497), (5183, 42049), (6007, 36281)]