81365925

素因数分解:

$3^1\times 5^2\times {\mathrm{197}}^1\times {\mathrm{5507}}^1$

素因数の和:5717

約数の個数: 24

約数和(自身を含む): 135232416

約数和(自身を除く): 53866491

約数列:

[1, 3, 5, 15, 25, 75, 197, 591, 985, 2955, 4925, 5507, 14775, 16521, 27535, 82605, 137675, 413025, 1084879, 3254637, 5424395, 16273185, 27121975, 81365925]

約数ペア:

[(1, 81365925), (3, 27121975), (5, 16273185), (15, 5424395), (25, 3254637), (75, 1084879), (197, 413025), (591, 137675), (985, 82605), (2955, 27535), (4925, 16521), (5507, 14775)]