21043904

素因数分解:

$2^6\times 7^1\times {\mathrm{107}}^1\times {\mathrm{439}}^1$

素因数の和:565

約数の個数: 56

約数和(自身を含む): 48280320

約数和(自身を除く): 27236416

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 107, 112, 214, 224, 428, 439, 448, 749, 856, 878, 1498, 1712, 1756, 2996, 3073, 3424, 3512, 5992, 6146, 6848, 7024, 11984, 12292, 14048, 23968, 24584, 28096, 46973, 47936, 49168, 93946, 98336, 187892, 196672, 328811, 375784, 657622, 751568, 1315244, 1503136, 2630488, 3006272, 5260976, 10521952, 21043904]

約数ペア:

[(1, 21043904), (2, 10521952), (4, 5260976), (7, 3006272), (8, 2630488), (14, 1503136), (16, 1315244), (28, 751568), (32, 657622), (56, 375784), (64, 328811), (107, 196672), (112, 187892), (214, 98336), (224, 93946), (428, 49168), (439, 47936), (448, 46973), (749, 28096), (856, 24584), (878, 23968), (1498, 14048), (1712, 12292), (1756, 11984), (2996, 7024), (3073, 6848), (3424, 6146), (3512, 5992)]