28005865

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{281}}^1\times {\mathrm{643}}^1$

素因数の和:960

約数の個数: 16

約数和(自身を含む): 34868736

約数和(自身を除く): 6862871

約数列:

[1, 5, 31, 155, 281, 643, 1405, 3215, 8711, 19933, 43555, 99665, 180683, 903415, 5601173, 28005865]

約数ペア:

[(1, 28005865), (5, 5601173), (31, 903415), (155, 180683), (281, 99665), (643, 43555), (1405, 19933), (3215, 8711)]