28380905

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47699}}^1$

素因数の和:47728

約数の個数: 16

約数和(自身を含む): 41212800

約数和(自身を除く): 12831895

約数列:

[1, 5, 7, 17, 35, 85, 119, 595, 47699, 238495, 333893, 810883, 1669465, 4054415, 5676181, 28380905]

約数ペア:

[(1, 28380905), (5, 5676181), (7, 4054415), (17, 1669465), (35, 810883), (85, 333893), (119, 238495), (595, 47699)]