20427904

素因数分解:

$2^7\times 7^2\times {\mathrm{3257}}^1$

素因数の和:3285

約数の個数: 48

約数和(自身を含む): 47355030

約数和(自身を除く): 26927126

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 128, 196, 224, 392, 448, 784, 896, 1568, 3136, 3257, 6272, 6514, 13028, 22799, 26056, 45598, 52112, 91196, 104224, 159593, 182392, 208448, 319186, 364784, 416896, 638372, 729568, 1276744, 1459136, 2553488, 2918272, 5106976, 10213952, 20427904]

約数ペア:

[(1, 20427904), (2, 10213952), (4, 5106976), (7, 2918272), (8, 2553488), (14, 1459136), (16, 1276744), (28, 729568), (32, 638372), (49, 416896), (56, 364784), (64, 319186), (98, 208448), (112, 182392), (128, 159593), (196, 104224), (224, 91196), (392, 52112), (448, 45598), (784, 26056), (896, 22799), (1568, 13028), (3136, 6514), (3257, 6272)]