21099340

素因数分解:

$2^2\times 5^1\times {\mathrm{857}}^1\times {\mathrm{1231}}^1$

素因数の和:2097

約数の個数: 24

約数和(自身を含む): 44396352

約数和(自身を除く): 23297012

約数列:

[1, 2, 4, 5, 10, 20, 857, 1231, 1714, 2462, 3428, 4285, 4924, 6155, 8570, 12310, 17140, 24620, 1054967, 2109934, 4219868, 5274835, 10549670, 21099340]

約数ペア:

[(1, 21099340), (2, 10549670), (4, 5274835), (5, 4219868), (10, 2109934), (20, 1054967), (857, 24620), (1231, 17140), (1714, 12310), (2462, 8570), (3428, 6155), (4285, 4924)]