21329478

素因数分解:

$2^1\times 3^2\times {\mathrm{251}}^1\times {\mathrm{4721}}^1$

素因数の和:4980

約数の個数: 24

約数和(自身を含む): 46407816

約数和(自身を除く): 25078338

約数列:

[1, 2, 3, 6, 9, 18, 251, 502, 753, 1506, 2259, 4518, 4721, 9442, 14163, 28326, 42489, 84978, 1184971, 2369942, 3554913, 7109826, 10664739, 21329478]

約数ペア:

[(1, 21329478), (2, 10664739), (3, 7109826), (6, 3554913), (9, 2369942), (18, 1184971), (251, 84978), (502, 42489), (753, 28326), (1506, 14163), (2259, 9442), (4518, 4721)]