21095888

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{1789}}^1$

素因数の和:1875

約数の個数: 40

約数和(自身を含む): 45279840

約数和(自身を除く): 24183952

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 67, 88, 134, 176, 268, 536, 737, 1072, 1474, 1789, 2948, 3578, 5896, 7156, 11792, 14312, 19679, 28624, 39358, 78716, 119863, 157432, 239726, 314864, 479452, 958904, 1318493, 1917808, 2636986, 5273972, 10547944, 21095888]

約数ペア:

[(1, 21095888), (2, 10547944), (4, 5273972), (8, 2636986), (11, 1917808), (16, 1318493), (22, 958904), (44, 479452), (67, 314864), (88, 239726), (134, 157432), (176, 119863), (268, 78716), (536, 39358), (737, 28624), (1072, 19679), (1474, 14312), (1789, 11792), (2948, 7156), (3578, 5896)]