81830380

素因数分解:

$2^2\times 5^1\times {\mathrm{317}}^1\times {\mathrm{12907}}^1$

素因数の和:13233

約数の個数: 24

約数和(自身を含む): 172399248

約数和(自身を除く): 90568868

約数列:

[1, 2, 4, 5, 10, 20, 317, 634, 1268, 1585, 3170, 6340, 12907, 25814, 51628, 64535, 129070, 258140, 4091519, 8183038, 16366076, 20457595, 40915190, 81830380]

約数ペア:

[(1, 81830380), (2, 40915190), (4, 20457595), (5, 16366076), (10, 8183038), (20, 4091519), (317, 258140), (634, 129070), (1268, 64535), (1585, 51628), (3170, 25814), (6340, 12907)]