21428907

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{307}}^1\times {\mathrm{439}}^1$

素因数の和:802

約数の個数: 16

約数和(自身を含む): 29272320

約数和(自身を除く): 7843413

約数列:

[1, 3, 53, 159, 307, 439, 921, 1317, 16271, 23267, 48813, 69801, 134773, 404319, 7142969, 21428907]

約数ペア:

[(1, 21428907), (3, 7142969), (53, 404319), (159, 134773), (307, 69801), (439, 48813), (921, 23267), (1317, 16271)]