81928133

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{641}}^1$

素因数の和:729

約数の個数: 24

約数和(自身を含む): 102000960

約数和(自身を除く): 20072827

約数列:

[1, 7, 19, 31, 133, 217, 589, 641, 961, 4123, 4487, 6727, 12179, 18259, 19871, 85253, 127813, 139097, 377549, 616001, 2642843, 4312007, 11704019, 81928133]

約数ペア:

[(1, 81928133), (7, 11704019), (19, 4312007), (31, 2642843), (133, 616001), (217, 377549), (589, 139097), (641, 127813), (961, 85253), (4123, 19871), (4487, 18259), (6727, 12179)]