21387400

素因数分解:

$2^3\times 5^2\times {\mathrm{106937}}^1$

素因数の和:106953

約数の個数: 24

約数和(自身を含む): 49726170

約数和(自身を除く): 28338770

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 106937, 213874, 427748, 534685, 855496, 1069370, 2138740, 2673425, 4277480, 5346850, 10693700, 21387400]

約数ペア:

[(1, 21387400), (2, 10693700), (4, 5346850), (5, 4277480), (8, 2673425), (10, 2138740), (20, 1069370), (25, 855496), (40, 534685), (50, 427748), (100, 213874), (200, 106937)]