21386289

素因数分解:

$3^1\times {\mathrm{17}}^3\times {\mathrm{1451}}^1$

素因数の和:1505

約数の個数: 16

約数和(自身を含む): 30317760

約数和(自身を除く): 8931471

約数列:

[1, 3, 17, 51, 289, 867, 1451, 4353, 4913, 14739, 24667, 74001, 419339, 1258017, 7128763, 21386289]

約数ペア:

[(1, 21386289), (3, 7128763), (17, 1258017), (51, 419339), (289, 74001), (867, 24667), (1451, 14739), (4353, 4913)]