20609421

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{18517}}^1$

素因数の和:18580

約数の個数: 16

約数和(自身を含む): 31999104

約数和(自身を除く): 11389683

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 18517, 55551, 129619, 388857, 981401, 2944203, 6869807, 20609421]

約数ペア:

[(1, 20609421), (3, 6869807), (7, 2944203), (21, 981401), (53, 388857), (159, 129619), (371, 55551), (1113, 18517)]