20156981

素因数分解:

${\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{337}}^1$

素因数の和:500

約数の個数: 16

約数和(自身を含む): 22486464

約数和(自身を除く): 2329483

約数列:

[1, 13, 43, 107, 337, 559, 1391, 4381, 4601, 14491, 36059, 59813, 188383, 468767, 1550537, 20156981]

約数ペア:

[(1, 20156981), (13, 1550537), (43, 468767), (107, 188383), (337, 59813), (559, 36059), (1391, 14491), (4381, 4601)]