209958991105

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{2531}}^1\times {\mathrm{385837}}^1$

素因数の和:388416

約数の個数: 16

約数和(自身を含む): 257912639424

約数和(自身を除く): 47953648319

約数列:

[1, 5, 43, 215, 2531, 12655, 108833, 385837, 544165, 1929185, 16590991, 82954955, 976553447, 4882767235, 41991798221, 209958991105]

約数ペア:

[(1, 209958991105), (5, 41991798221), (43, 4882767235), (215, 976553447), (2531, 82954955), (12655, 16590991), (108833, 1929185), (385837, 544165)]