20451289

素因数分解:

${\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{257}}^1$

素因数の和:456

約数の個数: 16

約数和(自身を含む): 22588416

約数和(自身を除く): 2137127

約数列:

[1, 17, 31, 151, 257, 527, 2567, 4369, 4681, 7967, 38807, 79577, 135439, 659719, 1203017, 20451289]

約数ペア:

[(1, 20451289), (17, 1203017), (31, 659719), (151, 135439), (257, 79577), (527, 38807), (2567, 7967), (4369, 4681)]