28221445

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47431}}^1$

素因数の和:47460

約数の個数: 16

約数和(自身を含む): 40981248

約数和(自身を除く): 12759803

約数列:

[1, 5, 7, 17, 35, 85, 119, 595, 47431, 237155, 332017, 806327, 1660085, 4031635, 5644289, 28221445]

約数ペア:

[(1, 28221445), (5, 5644289), (7, 4031635), (17, 1660085), (35, 806327), (85, 332017), (119, 237155), (595, 47431)]