81217725

素因数分解:

$3^1\times 5^2\times {\mathrm{761}}^1\times {\mathrm{1423}}^1$

素因数の和:2197

約数の個数: 24

約数和(自身を含む): 134550912

約数和(自身を除く): 53333187

約数列:

[1, 3, 5, 15, 25, 75, 761, 1423, 2283, 3805, 4269, 7115, 11415, 19025, 21345, 35575, 57075, 106725, 1082903, 3248709, 5414515, 16243545, 27072575, 81217725]

約数ペア:

[(1, 81217725), (3, 27072575), (5, 16243545), (15, 5414515), (25, 3248709), (75, 1082903), (761, 106725), (1423, 57075), (2283, 35575), (3805, 21345), (4269, 19025), (7115, 11415)]