256523008

素因数分解:

$2^8\times 7^1\times {\mathrm{257}}^1\times {\mathrm{557}}^1$

素因数の和:837

約数の個数: 72

約数和(自身を含む): 588524832

約数和(自身を除く): 332001824

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 257, 448, 514, 557, 896, 1028, 1114, 1792, 1799, 2056, 2228, 3598, 3899, 4112, 4456, 7196, 7798, 8224, 8912, 14392, 15596, 16448, 17824, 28784, 31192, 32896, 35648, 57568, 62384, 65792, 71296, 115136, 124768, 142592, 143149, 230272, 249536, 286298, 460544, 499072, 572596, 998144, 1002043, 1145192, 2004086, 2290384, 4008172, 4580768, 8016344, 9161536, 16032688, 18323072, 32065376, 36646144, 64130752, 128261504, 256523008]

約数ペア:

[(1, 256523008), (2, 128261504), (4, 64130752), (7, 36646144), (8, 32065376), (14, 18323072), (16, 16032688), (28, 9161536), (32, 8016344), (56, 4580768), (64, 4008172), (112, 2290384), (128, 2004086), (224, 1145192), (256, 1002043), (257, 998144), (448, 572596), (514, 499072), (557, 460544), (896, 286298), (1028, 249536), (1114, 230272), (1792, 143149), (1799, 142592), (2056, 124768), (2228, 115136), (3598, 71296), (3899, 65792), (4112, 62384), (4456, 57568), (7196, 35648), (7798, 32896), (8224, 31192), (8912, 28784), (14392, 17824), (15596, 16448)]