21309177

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{307}}^1\times {\mathrm{1361}}^1$

素因数の和:1688

約数の個数: 16

約数和(自身を含む): 30203712

約数和(自身を除く): 8894535

約数列:

[1, 3, 17, 51, 307, 921, 1361, 4083, 5219, 15657, 23137, 69411, 417827, 1253481, 7103059, 21309177]

約数ペア:

[(1, 21309177), (3, 7103059), (17, 1253481), (51, 417827), (307, 69411), (921, 23137), (1361, 15657), (4083, 5219)]