257007513

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{19457}}^1$

素因数の和:19521

約数の個数: 32

約数和(自身を含む): 425896704

約数和(自身を除く): 168889191

約数列:

[1, 3, 7, 17, 21, 37, 51, 111, 119, 259, 357, 629, 777, 1887, 4403, 13209, 19457, 58371, 136199, 330769, 408597, 719909, 992307, 2159727, 2315383, 5039363, 6946149, 12238453, 15118089, 36715359, 85669171, 257007513]

約数ペア:

[(1, 257007513), (3, 85669171), (7, 36715359), (17, 15118089), (21, 12238453), (37, 6946149), (51, 5039363), (111, 2315383), (119, 2159727), (259, 992307), (357, 719909), (629, 408597), (777, 330769), (1887, 136199), (4403, 58371), (13209, 19457)]