21081709

素因数分解:

${\mathrm{11}}^3\times {\mathrm{47}}^1\times {\mathrm{337}}^1$

素因数の和:417

約数の個数: 16

約数和(自身を含む): 23751936

約数和(自身を除く): 2670227

約数列:

[1, 11, 47, 121, 337, 517, 1331, 3707, 5687, 15839, 40777, 62557, 174229, 448547, 1916519, 21081709]

約数ペア:

[(1, 21081709), (11, 1916519), (47, 448547), (121, 174229), (337, 62557), (517, 40777), (1331, 15839), (3707, 5687)]