21986151

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{39191}}^1$

素因数の和:39222

約数の個数: 16

約数和(自身を含む): 33861888

約数和(自身を除く): 11875737

約数列:

[1, 3, 11, 17, 33, 51, 187, 561, 39191, 117573, 431101, 666247, 1293303, 1998741, 7328717, 21986151]

約数ペア:

[(1, 21986151), (3, 7328717), (11, 1998741), (17, 1293303), (33, 666247), (51, 431101), (187, 117573), (561, 39191)]