21806427

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{3121}}^1$

素因数の和:3278

約数の個数: 16

約数和(自身を含む): 31020192

約数和(自身を除く): 9213765

約数列:

[1, 3, 17, 51, 137, 411, 2329, 3121, 6987, 9363, 53057, 159171, 427577, 1282731, 7268809, 21806427]

約数ペア:

[(1, 21806427), (3, 7268809), (17, 1282731), (51, 427577), (137, 159171), (411, 53057), (2329, 9363), (3121, 6987)]