20988147

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{1777}}^1$

素因数の和:1938

約数の個数: 16

約数和(自身を含む): 29130752

約数和(自身を除く): 8142605

約数列:

[1, 3, 31, 93, 127, 381, 1777, 3937, 5331, 11811, 55087, 165261, 225679, 677037, 6996049, 20988147]

約数ペア:

[(1, 20988147), (3, 6996049), (31, 677037), (93, 225679), (127, 165261), (381, 55087), (1777, 11811), (3937, 5331)]