21085389

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{10601}}^1$

素因数の和:10637

約数の個数: 24

約数和(自身を含む): 34732152

約数和(自身を除く): 13646763

約数列:

[1, 3, 9, 13, 17, 39, 51, 117, 153, 221, 663, 1989, 10601, 31803, 95409, 137813, 180217, 413439, 540651, 1240317, 1621953, 2342821, 7028463, 21085389]

約数ペア:

[(1, 21085389), (3, 7028463), (9, 2342821), (13, 1621953), (17, 1240317), (39, 540651), (51, 413439), (117, 180217), (153, 137813), (221, 95409), (663, 31803), (1989, 10601)]