21244480

素因数分解:

$2^6\times 5^1\times {\mathrm{197}}^1\times {\mathrm{337}}^1$

素因数の和:551

約数の個数: 56

約数和(自身を含む): 50996088

約数和(自身を除く): 29751608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 197, 320, 337, 394, 674, 788, 985, 1348, 1576, 1685, 1970, 2696, 3152, 3370, 3940, 5392, 6304, 6740, 7880, 10784, 12608, 13480, 15760, 21568, 26960, 31520, 53920, 63040, 66389, 107840, 132778, 265556, 331945, 531112, 663890, 1062224, 1327780, 2124448, 2655560, 4248896, 5311120, 10622240, 21244480]

約数ペア:

[(1, 21244480), (2, 10622240), (4, 5311120), (5, 4248896), (8, 2655560), (10, 2124448), (16, 1327780), (20, 1062224), (32, 663890), (40, 531112), (64, 331945), (80, 265556), (160, 132778), (197, 107840), (320, 66389), (337, 63040), (394, 53920), (674, 31520), (788, 26960), (985, 21568), (1348, 15760), (1576, 13480), (1685, 12608), (1970, 10784), (2696, 7880), (3152, 6740), (3370, 6304), (3940, 5392)]