21310655

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1\times {\mathrm{653}}^1$

素因数の和:826

約数の個数: 16

約数和(自身を含む): 26275104

約数和(自身を除く): 4964449

約数列:

[1, 5, 61, 107, 305, 535, 653, 3265, 6527, 32635, 39833, 69871, 199165, 349355, 4262131, 21310655]

約数ペア:

[(1, 21310655), (5, 4262131), (61, 349355), (107, 199165), (305, 69871), (535, 39833), (653, 32635), (3265, 6527)]