28405321

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{66523}}^1$

素因数の和:66591

約数の個数: 8

約数和(自身を含む): 32995904

約数和(自身を除く): 4590583

約数列:

[1, 7, 61, 427, 66523, 465661, 4057903, 28405321]

約数ペア:

[(1, 28405321), (7, 4057903), (61, 465661), (427, 66523)]