21189351

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{421}}^1\times {\mathrm{883}}^1$

素因数の和:1326

約数の個数: 16

約数和(自身を含む): 29843840

約数和(自身を除く): 8654489

約数列:

[1, 3, 19, 57, 421, 883, 1263, 2649, 7999, 16777, 23997, 50331, 371743, 1115229, 7063117, 21189351]

約数ペア:

[(1, 21189351), (3, 7063117), (19, 1115229), (57, 371743), (421, 50331), (883, 23997), (1263, 16777), (2649, 7999)]