28200005

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1\times {\mathrm{911}}^1$

素因数の和:1108

約数の個数: 16

約数和(自身を含む): 34933248

約数和(自身を除く): 6733243

約数列:

[1, 5, 41, 151, 205, 755, 911, 4555, 6191, 30955, 37351, 137561, 186755, 687805, 5640001, 28200005]

約数ペア:

[(1, 28200005), (5, 5640001), (41, 687805), (151, 186755), (205, 137561), (755, 37351), (911, 30955), (4555, 6191)]