21000612388

素因数分解:

$2^2\times 7^1\times {\mathrm{750021871}}^1$

素因数の和:750021882

約数の個数: 12

約数和(自身を含む): 42001224832

約数和(自身を除く): 21000612444

約数列:

[1, 2, 4, 7, 14, 28, 750021871, 1500043742, 3000087484, 5250153097, 10500306194, 21000612388]

約数ペア:

[(1, 21000612388), (2, 10500306194), (4, 5250153097), (7, 3000087484), (14, 1500043742), (28, 750021871)]