20738187

素因数分解:

$3^4\times {\mathrm{503}}^1\times {\mathrm{509}}^1$

素因数の和:1024

約数の個数: 20

約数和(自身を含む): 31101840

約数和(自身を除く): 10363653

約数列:

[1, 3, 9, 27, 81, 503, 509, 1509, 1527, 4527, 4581, 13581, 13743, 40743, 41229, 256027, 768081, 2304243, 6912729, 20738187]

約数ペア:

[(1, 20738187), (3, 6912729), (9, 2304243), (27, 768081), (81, 256027), (503, 41229), (509, 40743), (1509, 13743), (1527, 13581), (4527, 4581)]