21308949

素因数分解:

$3^2\times {\mathrm{103}}^1\times {\mathrm{127}}^1\times {\mathrm{181}}^1$

素因数の和:417

約数の個数: 24

約数和(自身を含む): 31496192

約数和(自身を除く): 10187243

約数列:

[1, 3, 9, 103, 127, 181, 309, 381, 543, 927, 1143, 1629, 13081, 18643, 22987, 39243, 55929, 68961, 117729, 167787, 206883, 2367661, 7102983, 21308949]

約数ペア:

[(1, 21308949), (3, 7102983), (9, 2367661), (103, 206883), (127, 167787), (181, 117729), (309, 68961), (381, 55929), (543, 39243), (927, 22987), (1143, 18643), (1629, 13081)]