21007028

素因数分解:

$2^2\times 7^1\times {\mathrm{439}}^1\times {\mathrm{1709}}^1$

素因数の和:2159

約数の個数: 24

約数和(自身を含む): 42134400

約数和(自身を除く): 21127372

約数列:

[1, 2, 4, 7, 14, 28, 439, 878, 1709, 1756, 3073, 3418, 6146, 6836, 11963, 12292, 23926, 47852, 750251, 1500502, 3001004, 5251757, 10503514, 21007028]

約数ペア:

[(1, 21007028), (2, 10503514), (4, 5251757), (7, 3001004), (14, 1500502), (28, 750251), (439, 47852), (878, 23926), (1709, 12292), (1756, 11963), (3073, 6836), (3418, 6146)]