20528361

素因数分解:

$3^2\times 7^1\times {\mathrm{499}}^1\times {\mathrm{653}}^1$

素因数の和:1165

約数の個数: 24

約数和(自身を含む): 34008000

約数和(自身を除く): 13479639

約数列:

[1, 3, 7, 9, 21, 63, 499, 653, 1497, 1959, 3493, 4491, 4571, 5877, 10479, 13713, 31437, 41139, 325847, 977541, 2280929, 2932623, 6842787, 20528361]

約数ペア:

[(1, 20528361), (3, 6842787), (7, 2932623), (9, 2280929), (21, 977541), (63, 325847), (499, 41139), (653, 31437), (1497, 13713), (1959, 10479), (3493, 5877), (4491, 4571)]