18920854

素因数分解:

$2^1\times {\mathrm{131}}^1\times {\mathrm{257}}^1\times {\mathrm{281}}^1$

素因数の和:671

約数の個数: 16

約数和(自身を含む): 28811376

約数和(自身を除く): 9890522

約数列:

[1, 2, 131, 257, 262, 281, 514, 562, 33667, 36811, 67334, 72217, 73622, 144434, 9460427, 18920854]

約数ペア:

[(1, 18920854), (2, 9460427), (131, 144434), (257, 73622), (262, 72217), (281, 67334), (514, 36811), (562, 33667)]