21280727

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{691}}^1$

素因数の和:830

約数の個数: 16

約数和(自身を含む): 24181248

約数和(自身を除く): 2900521

約数列:

[1, 13, 23, 103, 299, 691, 1339, 2369, 8983, 15893, 30797, 71173, 206609, 925249, 1636979, 21280727]

約数ペア:

[(1, 21280727), (13, 1636979), (23, 925249), (103, 206609), (299, 71173), (691, 30797), (1339, 15893), (2369, 8983)]