20400128

素因数分解:

$2^{11}\times 7^1\times {\mathrm{1423}}^1$

素因数の和:1452

約数の個数: 48

約数和(自身を含む): 46650240

約数和(自身を除く): 26250112

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 512, 896, 1024, 1423, 1792, 2048, 2846, 3584, 5692, 7168, 9961, 11384, 14336, 19922, 22768, 39844, 45536, 79688, 91072, 159376, 182144, 318752, 364288, 637504, 728576, 1275008, 1457152, 2550016, 2914304, 5100032, 10200064, 20400128]

約数ペア:

[(1, 20400128), (2, 10200064), (4, 5100032), (7, 2914304), (8, 2550016), (14, 1457152), (16, 1275008), (28, 728576), (32, 637504), (56, 364288), (64, 318752), (112, 182144), (128, 159376), (224, 91072), (256, 79688), (448, 45536), (512, 39844), (896, 22768), (1024, 19922), (1423, 14336), (1792, 11384), (2048, 9961), (2846, 7168), (3584, 5692)]