21050185

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{5309}}^1$

素因数の和:5388

約数の個数: 16

約数和(自身を含む): 27654480

約数和(自身を除く): 6604295

約数列:

[1, 5, 13, 61, 65, 305, 793, 3965, 5309, 26545, 69017, 323849, 345085, 1619245, 4210037, 21050185]

約数ペア:

[(1, 21050185), (5, 4210037), (13, 1619245), (61, 345085), (65, 323849), (305, 69017), (793, 26545), (3965, 5309)]