20420652544

素因数分解:

$2^9\times {\mathrm{257}}^1\times {\mathrm{155191}}^1$

素因数の和:155466

約数の個数: 40

約数和(自身を含む): 40960445328

約数和(自身を除く): 20539792784

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 257, 512, 514, 1028, 2056, 4112, 8224, 16448, 32896, 65792, 131584, 155191, 310382, 620764, 1241528, 2483056, 4966112, 9932224, 19864448, 39728896, 39884087, 79457792, 79768174, 159536348, 319072696, 638145392, 1276290784, 2552581568, 5105163136, 10210326272, 20420652544]

約数ペア:

[(1, 20420652544), (2, 10210326272), (4, 5105163136), (8, 2552581568), (16, 1276290784), (32, 638145392), (64, 319072696), (128, 159536348), (256, 79768174), (257, 79457792), (512, 39884087), (514, 39728896), (1028, 19864448), (2056, 9932224), (4112, 4966112), (8224, 2483056), (16448, 1241528), (32896, 620764), (65792, 310382), (131584, 155191)]