20505117

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{4447}}^1$

素因数の和:4532

約数の個数: 16

約数和(自身を含む): 28823040

約数和(自身を除く): 8317923

約数列:

[1, 3, 29, 53, 87, 159, 1537, 4447, 4611, 13341, 128963, 235691, 386889, 707073, 6835039, 20505117]

約数ペア:

[(1, 20505117), (3, 6835039), (29, 707073), (53, 386889), (87, 235691), (159, 128963), (1537, 13341), (4447, 4611)]