21506307

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1\times {\mathrm{1201}}^1$

素因数の和:1378

約数の個数: 16

約数和(自身を含む): 29540352

約数和(自身を除く): 8034045

約数列:

[1, 3, 47, 127, 141, 381, 1201, 3603, 5969, 17907, 56447, 152527, 169341, 457581, 7168769, 21506307]

約数ペア:

[(1, 21506307), (3, 7168769), (47, 457581), (127, 169341), (141, 152527), (381, 56447), (1201, 17907), (3603, 5969)]