28391531

素因数分解:

$7^2\times {\mathrm{727}}^1\times {\mathrm{797}}^1$

素因数の和:1538

約数の個数: 12

約数和(自身を含む): 33113808

約数和(自身を除く): 4722277

約数列:

[1, 7, 49, 727, 797, 5089, 5579, 35623, 39053, 579419, 4055933, 28391531]

約数ペア:

[(1, 28391531), (7, 4055933), (49, 579419), (727, 39053), (797, 35623), (5089, 5579)]