21380577

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{3301}}^1$

素因数の和:3448

約数の個数: 16

約数和(自身を含む): 30431232

約数和(自身を除く): 9050655

約数列:

[1, 3, 17, 51, 127, 381, 2159, 3301, 6477, 9903, 56117, 168351, 419227, 1257681, 7126859, 21380577]

約数ペア:

[(1, 21380577), (3, 7126859), (17, 1257681), (51, 419227), (127, 168351), (381, 56117), (2159, 9903), (3301, 6477)]