20309185

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{10079}}^1$

素因数の和:10128

約数の個数: 16

約数和(自身を含む): 27095040

約数和(自身を除く): 6785855

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 10079, 50395, 131027, 312449, 655135, 1562245, 4061837, 20309185]

約数ペア:

[(1, 20309185), (5, 4061837), (13, 1562245), (31, 655135), (65, 312449), (155, 131027), (403, 50395), (2015, 10079)]