21507499

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{307}}^1\times {\mathrm{317}}^1$

素因数の和:654

約数の個数: 16

約数和(自身を含む): 24681888

約数和(自身を除く): 3174389

約数列:

[1, 13, 17, 221, 307, 317, 3991, 4121, 5219, 5389, 67847, 70057, 97319, 1265147, 1654423, 21507499]

約数ペア:

[(1, 21507499), (13, 1654423), (17, 1265147), (221, 97319), (307, 70057), (317, 67847), (3991, 5389), (4121, 5219)]