20513311

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{32203}}^1$

素因数の和:32230

約数の個数: 12

約数和(自身を含む): 25698792

約数和(自身を除く): 5185481

約数列:

[1, 7, 13, 49, 91, 637, 32203, 225421, 418639, 1577947, 2930473, 20513311]

約数ペア:

[(1, 20513311), (7, 2930473), (13, 1577947), (49, 418639), (91, 225421), (637, 32203)]