21006415

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{1259}}^1$

素因数の和:1382

約数の個数: 16

約数和(自身を含む): 26127360

約数和(自身を除く): 5120945

約数列:

[1, 5, 47, 71, 235, 355, 1259, 3337, 6295, 16685, 59173, 89389, 295865, 446945, 4201283, 21006415]

約数ペア:

[(1, 21006415), (5, 4201283), (47, 446945), (71, 295865), (235, 89389), (355, 59173), (1259, 16685), (3337, 6295)]