16720249

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{4273}}^1$

素因数の和:4336

約数の個数: 16

約数和(自身を含む): 21062272

約数和(自身を除く): 4342023

約数列:

[1, 7, 13, 43, 91, 301, 559, 3913, 4273, 29911, 55549, 183739, 388843, 1286173, 2388607, 16720249]

約数ペア:

[(1, 16720249), (7, 2388607), (13, 1286173), (43, 388843), (91, 183739), (301, 55549), (559, 29911), (3913, 4273)]