21515833

素因数分解:

${\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{193}}^1$

素因数の和:384

約数の個数: 16

約数和(自身を含む): 23354496

約数和(自身を除く): 1838663

約数列:

[1, 23, 37, 131, 193, 851, 3013, 4439, 4847, 7141, 25283, 111481, 164243, 581509, 935471, 21515833]

約数ペア:

[(1, 21515833), (23, 935471), (37, 581509), (131, 164243), (193, 111481), (851, 25283), (3013, 7141), (4439, 4847)]