21165331

素因数分解:

${\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{1543}}^1$

素因数の和:1626

約数の個数: 16

約数和(自身を含む): 24456960

約数和(自身を除く): 3291629

約数列:

[1, 11, 29, 43, 319, 473, 1247, 1543, 13717, 16973, 44747, 66349, 492217, 729839, 1924121, 21165331]

約数ペア:

[(1, 21165331), (11, 1924121), (29, 729839), (43, 492217), (319, 66349), (473, 44747), (1247, 16973), (1543, 13717)]