21605571

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{3929}}^1$

素因数の和:3995

約数の個数: 24

約数和(自身を含む): 34332480

約数和(自身を除く): 12726909

約数列:

[1, 3, 9, 13, 39, 47, 117, 141, 423, 611, 1833, 3929, 5499, 11787, 35361, 51077, 153231, 184663, 459693, 553989, 1661967, 2400619, 7201857, 21605571]

約数ペア:

[(1, 21605571), (3, 7201857), (9, 2400619), (13, 1661967), (39, 553989), (47, 459693), (117, 184663), (141, 153231), (423, 51077), (611, 35361), (1833, 11787), (3929, 5499)]