20647683

素因数分解:

$3^3\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1021}}^1$

素因数の和:1144

約数の個数: 32

約数和(自身を含む): 35320320

約数和(自身を除く): 14672637

約数列:

[1, 3, 7, 9, 21, 27, 63, 107, 189, 321, 749, 963, 1021, 2247, 2889, 3063, 6741, 7147, 9189, 20223, 21441, 27567, 64323, 109247, 192969, 327741, 764729, 983223, 2294187, 2949669, 6882561, 20647683]

約数ペア:

[(1, 20647683), (3, 6882561), (7, 2949669), (9, 2294187), (21, 983223), (27, 764729), (63, 327741), (107, 192969), (189, 109247), (321, 64323), (749, 27567), (963, 21441), (1021, 20223), (2247, 9189), (2889, 7147), (3063, 6741)]